实验: experiment; test; trial run 短语和例子动物实验 animal experiment; 进行科学实验 conduct scientific experiments; 声学实验 test in sound; 用青蛙做实验 experiment (upon) on frogs; 富兰克林的实验表明闪电是一种放电。 franklin's experime
断: Ⅰ动词1.(分成段) break; snap 短语和例子棍子断成两段。 the stick broke in two. 绳子断了。the string broke.树枝在积雪的重压下突然断了。the branch snapped under all that snow.2.(断绝;隔断) break off; cut off; stop 短语和例子断敌退路 cut off