The computer repeats a set of calculations.计算机重复着一组运算。Both have fudged their calculations and avoided specifics.两人都对自己的计算结果含糊其词，避免提到具体数字。20 per cent of the calculations are wrong.这些计算有20%是错误的。...
At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.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.Microspore abortion occurred after the tetrad formation.小孢子败育发生在四分体形成以后...