Part 1 字首 表示{数字}的字首 pent- = five 五
入门字
pentangle (n.) 五角形
pent/ angle
five/ angle
进阶字
1. pentagon (n.) 五角形
pent/ agon
five/ angle
The U.S. Department of Defense is housed in a building in the shape of a pentagon.
美国国防部位于一栋五角形建筑中。
2. pentathlon (n.) 五项运动
pent/ athl/ on
five/ sports/ 名词字尾
In the pentathlon, a contestant takes part in the long jump, the javelin throw, the 200-meter dash, the discus throw, and the 1,500-meter run.
五项运动的参赛者要参加跳远、标枪、两百公尺短跑、铁饼和一千五百尺长跑。