Objective To evaluate the environmental estrogenic activity of the pesticide fenitrothion and study the possible mechanism.目的检测杀螟硫磷的环境雌激素活性,并探讨其作用机制....
Helen's choice of lipstick was a good match for her skin-tone.海伦选择的唇膏很适合她的肤色。Although he was only grumbling, his choice of words made Rodney angry.尽管他只是在咕哝，可是他的措词却让罗德妮恼火。This new information does throw doubt on thei...
Right. What I want now is two volunteers to come down to the front.好了，现在我需要两个自告奋勇的人到前面来。Bill was sitting and daydreaming so his mother told him to come down to earth and to do his homework.比尔坐着空想,他母亲要他面对现实,去做课外作业." Why n...