【baby】a newly born creature.
* Mary had a baby last night.
昨晚，玛莉生个小孩。
【back】(1) the part behind the front; (2) the other way from forward.
* The writer's picture is on the back of the book. (1)
作者的照片在书的背面。
* She stopped walking away and looked back at me. (2)
她停止走动并且回头看我。
【bad】(1) wrong; (2) acting against the law; (3) not good.
* Bill made a bad decision. (1)
比尔做出糟糕的决定。
* The prisoner was a bad man for most of his life. (2)
囚犯大半辈子都是个坏人。
* The water was dirty and had a bad taste. (3)
这水又脏又臭。
【balance】to make two sides or forces equal.
* I balanced my budget by not spending more than I earned.
我通过消费不多于我的收入来平衡我的预算。
【ball】something round.
* The earth is shaped like a ball.
地球形状像一个球。
【balloon】a device of strong, light material that rises when filled with gas lighter than air.
* Many hot air balloons race in New Mexico each year.
每年在新墨西哥有很多热气球比赛。
【ballot】a piece of paper used for voting.
* I was asked to count the ballots and announce the winner.
我应邀点算选票并且宣布获胜者。
【ban】(1) to not permit; (2) to stop; (3) an official restriction.
* Running is banned at our swimming pool. (1)
我们的游泳池周围禁止跑步。
* The curfew bans all night time travel. (2)
宵禁令禁止通宵外出。
* The protestors called for a ban on smoking in public buildings. (3)
抗议者要求禁止在公共建筑物中抽烟。
call for：去接(某人)，去取(某物)，要求，需求
【bank】an organization that keeps and lends money.
* The man said he robbed banks because that is where the money is.
那个人说他抢劫银行，因为银行有钱。
【bar】to prevent or block.
* He was barred from competing in the games because he used illegal drugs.
他被限制参加比赛，因为他使用不合法的药品。
bar from：禁止(接近、做)…
【barrier】anything that blocks or makes an action difficult.
* The voting rights law removes most racial barriers to voting.
投票权法律为投票（选举）排出了大多数种族障碍。
voting right：投票权
【base】(1) a military center; (2) to establish as a fact.
* My brother is at a military training base. (1)
我兄弟在一个军事训练基地。
* Her research was based on experiments. (2)
她的研究基于实验。
base on：使建立在…基础上
【battle】a fight between opposing armed forces.
* Southern forces won the battle but lost the war.
南方军队赢了战役，输了战争。
【be】(1) to live; (2) to happen; (3) to exist.
* The man is very sick and will not be here much longer. (1)
那个人非常不舒服，并且将不会长时间在这里。
* The wedding will be soon. (2)
婚礼很快就要进行了。
* Washington, D.C., has been the capital for 200 years. (3)
华盛顿特区作为首都有200年了。
【beat】to hit again and again.
* The prison guards denied they beat the prisoner.
监狱警卫否认他们殴打囚犯。
【beauty】that which pleases the eye, ear or spirit.
* All fell silent at the beauty of the mountains.
在秀丽的群山面前所有（人）都陷入沉默。
【because】for the reason that.
* He left because he was sick.
他离开是因为他生病了。
【become】to come to be.
* When did he become sick?
他什么时候得的病？
【bed】a sleeping place.
* The bed was so hard that I could not sleep.
这个床太硬了，我睡不着。
【before】earlier.
* Bill ate before he went to work.
比尔在上班之前吃饭。
【begin】(1) to do the first part of an action; (2) to start.
* He began to laugh when he saw me. (1)
他看见我时就笑了起来。
* A long walk begins with one step. (2)
千里之行，始于足下。
【behind】(1) at the back of; (2) in back of.
* Our fastest runner was far behind the leader. (1)
我们的最快的跑步选手远远落在领先者的后面。
* I live behind that hill. (2)
我在那座小山后面住。
【believe】(1) to think; (2) to feel sure of; (3) to accept as true; (4) to trust.
* I believe it may rain tonight. (1)
我相信今晚可能下雨。
* Jim believes his friend is a good writer. (2)
吉姆相信他的朋友是一位好作家。
* The lawyer believed the suspect's statement. (3)
律师相信嫌疑犯的陈述。
* We believe in God. (4)
我们信仰上帝。
believe in：相信，信奉, 信仰
【bell】an instrument that makes a musical sound.
* Jim says he likes the sound of a church bell.
吉姆说他喜欢一口教堂钟的声音。
【belong】(1) to be owned by; (2) to be a member of.
* That book belongs to my sister. (1)
那书是我妹妹的。
belong to：属于，是(某团体、国家等)的成员
* My brother belongs to the Boy Scouts. (2)
我的兄弟是童子军成员。
belong to：属于，是(某团体、国家等)的成员
【below】lower than.
* The temperature outside is below freezing.
外面温度是在冰点以下。
【best】the most good.
* All of our singers are good but Lisa is best.
我们的所有歌手都好，但是莉萨最好。
【betray】(1) to turn against; (2) to be false to.
* The spy betrayed his country. (1)
间谍被判他的国家。
* The boy betrayed his mother's trust in him. (2)
男孩辜负他的母亲对他的信任。
trust in：相信，信任
【better】more good than.
* Zach is a better baseball player than Al.
扎克是一名比艾尔更好的棒球运动员。
【between】(1) in the space or time that separates; (2) from one to the other.
* I would like to meet with you between two and three o'clock. (1)
我想在2点和3点之间与你见面。
* Secret talks between the two nations produced an agreement. (2)
两个国家之间的秘密交谈产生一项协议。
【big】(1) of great size; (2) not small.
* Texas is a big state. (1)
得克萨斯州是一大州。
* Melissa was a big baby. (2)
梅利莎是一大个婴儿。
【bill】a legislative proposal.
* To become law, a bill must be approved by both houses of Congress and signed by the President.
一个法案要想成为法律，必须经国会两院通过并且由总统签字。
【biology】the scientific study of life or living things in all their forms.
* My school requires one year of study each of biology, physics and chemistry.
我的学校需要学习一年的生物学，物理学和化学。
【bird】a creature that flies.
* I watched the bird fly away until I could no longer see it.
我看鸟飞走，直到看不见它。
no longer：不再，已不
【bite】to cut with the teeth.
* My dog sounds aggressive but he will not bite you.
我的狗听起来很挑衅的，但不会咬你。
【black】(1) dark; (2) having the color like that of the night sky.
* I first saw him on a black and stormy night. (1)
我第一次看见他，是在一个漆黑的暴风雨的晚上。
* The doctor arrived in a big black car. (2)
医生乘一辆大的黑色轿车抵达。
【blame】(1) to accuse; (2) to hold responsible.
* The police blamed him for the crime. (1)
警察指责他犯罪。
blame for：因…怪罪，责怪(某人)
* Don't blame me for your bad decision. (2)
不要因你的坏决定而责备我。
【blanket】a cloth cover used to keep warm.
* The flood refugees needed food and warm blankets.
洪灾的难民需要食物和温暖的毯子。
【bleed】to lose blood.
* Do you know how to stop your nose from bleeding?
你知道怎样阻止你的鼻子流血吗?
【blind】not able to see.
* Being blind did not keep him from becoming a famous singer.
失明不能阻止他成为一个著名歌手。
keep from：阻止，免于，隐瞒