卫生: hygienism; hygiene; health; sanitation 短语和例子个人卫生 personal hygiene; 公共卫生 public health; 环境卫生 environmental sanitation; 讲卫生 pay attention to hygiene; 饭前不洗手, 不卫生。 it is unsanitary to eat with
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
