婴儿吮吸时，会有更多的奶水流出来。As the baby suckles, a further supply of milk is generated.那个孩子正在吮吸着空奶瓶.The baby was sucking away at the empty feeding - bottle.婴儿正在吮吸母乳.The baby was sucking its mother's breast....
My heartfelt sympathy goes out to all the relatives.我对所有的亲人表示由衷的慰问。We would like to take this opportunity to convey our heartfelt condolences to the families of the victims.我们谨此向受害人家属表达我们衷心的慰唁.There was surely in it a qu...
A hydrocarbon was known to be either an alkene or alkane.某碳氢化合物已知可能是烯烃或是烷烃.Recent advance in researches of alkane uptake by microorganisms was reviewed.综述了近期在烃的微生物摄取机制方面的研究进展.Panagiotopoulos - Reid mixing rules are bette...