2016年大学英语四六级作文素材之必备谚语(O)obedie nee is the first duty of a soldier.军人以服从命令为天职。observati on is the best teacher.观察是的老师。offense is the best defen se.进攻是的防御。old frie nds and old wines are best.陈酒味醇，老友情深。old sin makes new shame.一失足成千古恨。once a man and twice a child.一次老，两次小。once a thief, always a thief.偷盗一次，做贼一世。once bitte n, twice shy.一朝被蛇咬，十年怕井绳。one boy is a boy, two boys half a boy, three boys no boy.一个和尚挑水喝，两个和尚抬水喝，三个和尚没水喝。one cannot put back the clock.时钟不能倒转。one eyewitness is better than ten hearsays.百闻不如一 见。one false move may lose the game.一着不慎，满盘皆输。行善积德one good tur n deserves ano ther.one hour today is worth two tomorrow.争分夺秒效率高。one man s fault is other man s less on. 前车之鉴。one n ever loses anything by polite ness.讲礼貌不吃亏。one swallow does not make a summer.一燕不成夏。#one s words reflect one out of debt, out of dan ger. out of office, out of dan ger. out of sight, out of mind.s thi nking. 言为心声。无债一身轻。无官一身轻。眼不见，心为静。