a: we rented a yacht for two weeks.
b: and to where did you sail?
yacht
n. 快艇，（竞赛用的）帆船，游艇
a: why did you not finish knitting the blanket?
b: i ran out of yarn.
yarn
n. 1.纱，纱线，防线；2.奇闻漫谈，旅行逸事
a: i am yearning to see you again.
b: yes, i can’t wait to see you either.
yearn
vi. (for) 渴望，切盼，向往
a: stop making so much noise!
b: there is no need to yell at me.
yell
vi. / n. 号叫，叫喊
a: the animals were held together with a yoke .
b: and to what part of the body was it attached?
yoke
n. 1.牛轭；2.束缚，枷锁
vt. 结合，联合
a: do you like to eat eggs?
b: i only eat the yolk .
yolk
n. 蛋黄
-a: you play sports with great zeal.
b: yes, i am enthusiastic about all sports.
zeal
n. 热心，热忱，热情
a: have you ever seen a zebra ?
b: yes, but only in a zoo.
zebra
n. 斑马
a: is your kitchen sink made out of steel?
b: no, i think that it is zinc .
zinc
n. 锌
a: the zip is broken on my coat.
b: you must be feeling the cold.
zip
n. 1.拉链；2.[口]精力，活力，元气
vt. 用拉链拉上或扣上
zip up 拉上拉链
a: we zoomed from city to city during our trip.
b: but we had a fantastic time nevertheless.
zoom
vi. 1.（飞机，汽车等）急速移动；2.（价格，费用等）急升，猛涨
n. 嗡嗡声，隆隆声
a: gavin unleashed some nasty comments at me.
b: don’t mind him, he is always rude.
unleash
vt. 1。发泄，发出；2。解带子放开
a: did you hear the latest news?
b: no, can you update me on the details?
update
vt. 更新，使现代化
n. 最新信息
a: you always stick to your word.
b: yes, i like to uphold my principles.
uphold
vt. 支持，维护，赞成，认可
a: there was an uprising in my country in the 1920s.
b: was that when you declared an independent nation?
uprising
n. 起义，暴动
a: there will be uproar if my homework is not submitted in time.
b: oh, but you are usually such a good student.
uproar
n. 吵闹，喧嚣，骚乱
a: i heard that some toxic uranium was dumped into the sea.
b: yes, it is shocking news.
uranium
n. 铀
a: there is a terrible smell of urine in this room.
b: i agree, but i don’t know where it is coming from.
urine
n. 尿
a: the usher directed me to the wrong seat.
b: oh, i think that he has just started the job.
usher
n. 引座员，招待员，迎宾员
vt. 1。引，领，陪同；2。预报（……的来到），宣告；3，创始，开辟