effective – adj. producing a result that is wanted

immune system – n. the system that protects your body from diseases and infections

dose – n. the amount of a medicine, drug, or vitamin that is taken at one time

expose – v. to leave something uncovered without protection

raison d'etre – phrase. French for “reason to be”


 2/4   首页 上一页 1 2 3 4 下一页 尾页