Brush your teeth after each meal and floss daily.餐后要刷牙，而且每天要使用牙线清洁牙缝。I ran the brush through my hair and dashed out.我用刷子刷了一下头发，冲了出去。Once inside her apartment she felt an urge to brush her teeth.一回到自己的公寓，她就有一种想要刷牙的冲动。...
Rattlesnakes belong to the viper family.响尾蛇属于蛇科.He unwarily treads upon a viper asleep just before his feet.他不小心踩到正睡在他脚前的蛇上.You've had a pit viper and a ferret under your stage since Tuesday?从星期二起毒蛇和雪貂就呆在台下的管道里了?...
解释为什么钡能形成过氧化物而铍则不能。Explain why barium forms peroxide but beryllium does not.然而铍的毒性限制了它的作用.However the toxic properties of beryllium limit its application.但如果用铝包覆铍,则可避免加工过程中及储存期间的中毒问题.Toxicity problem in manufacturing and...
这人发伪誓时迟疑了起来.The man scrupled to perjure himself.奥瑟罗好人儿, 留心不要发伪誓; 你的死已在眼前了.Othello . Sweet soul, take heed , Take heed of perjury; thou art on thy deathbed.你不该以上帝之名发伪誓.You shall not take the name of the Lord your God in v...
The burlesque element weakens the serious portions of the book.书里的戏谑成分使严肃部分受到损害.Thus only the metabolizable portions of a feedstuff can provide energy and essential nutrients.因此,只有饲料的可代谢部分可提供能量和必需的养分.supersize portions o...
乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.这是冷却,滤出沉淀的二氯碘化铯.It is cool and filter the precipitated caesium dichloroiodide.反应器和输送管线被用少量二氯甲烷洗涤几次.The rea...