1650s, "a covering or protection for the knee," from knee (n.) + cap (n.). Meaning "bone in front of the knee joint" is from 1869; the verb in the underworld sense of "to shoot (someone) in the knee" as punishment is attested by 1975. Related: Kneecapped.
权威例句
1. Roll the leg inward until the kneecap faces the other leg.
卷腿膝盖向内,直至面临另一方面,另一条腿.
2. It is unclear who social conservatives would rally around if they wanted to kneecap the front - runner.
如果,保守人士想阻碍朱利亚尼赢得选举,他们会转而助谁一臂之力尚且不明.
3. Bynum injured his left knee on Jan. 13, suffering a bone bruise and briefly dislocated kneecap.
拜纳姆在1月13号比赛中左膝受伤, 骨头被撞, 膝盖骨暂时脱臼.
4. Undead Female - " I heard a knee slapper once , and skipped my kneecap right across a lake. "
我听到我的膝盖响了一下, 然后 膝盖骨 就掉到湖里去了.
5. Kay had dislocated her left kneecap in her semi - final match of the round robin tournament.