此时每条染色体由一对染色单体构成,这两条联合的染色体称为四分体.At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.这种四分体最终萎缩或被再吸收.The tetrads eventually shrivel or are resorbed.结果形成二分体孢子...
一项新的研究确证了吸烟者比不吸烟者死得早。A new study proved conclusively that smokers die younger than non-smokers.最不自觉的文体却需要有最有自觉的确证.The least self - conscious of styles should require the most self - conscious of corroborations.他初步确证了我的发音...
马尔罗一面用幻想家的眼光把听众吸引住,一面口若悬河,一泻千里.Words cascaded in torrents from Malraux as he fixed his hearers with his visionary gaze.真正刺激的是他不仅是个科学家,他还是个幻想家.The real turn - on is that he is a visionary as well as a scientist.克拉克虽然被人们看作...