When heterothallism is purely physiological, morphologically identical strains exist ( often designated plus and minus strains ).当异宗配合纯粹是生理上时, 存在形态上相同的菌系 ( 经常用+—号表示 )....
Tom wasted no time in telling me why he had come.汤姆马上告诉了我他来的原因。Have an aim in life, or your energies will all be wasted.人生应该树立目标，否则你的精神会白白浪费。 ——R.Hydrocarbons ( HC ), like carbon monoxide, represent unburned and wasted f...