The birds cannot afford to relax their vigilance against predators.鸟儿不敢放松对捕食者的警戒。Constant vigilance is necessary in order to avoid accidents.为了避免意外事故,必须经常保持警惕.Never relax your vigilance while you live in peace.你们要居安思危.We...
The analogue signals from the video tape are converted into digital code.采自该录像带的模拟信号被转换成数字代码。No model can ever be a perfect analogue of nature itself.任何模型都无法完全模拟自然本身。With respect to analogue data ; to place it in digital...
心皮是由大孢子叶两边愈合进化而来的.It has evolved by fusion of the two edges of the megasporophyll.孢子异型:指植物产生两种大小不同的孢子: 小孢子和大孢子.Heterospory The production of two different sizes of spore: microspores and megaspores.通常较大的大孢子含有更多的贮藏养料.The ...
宫外孕的人还能怀孕 吗 ?Can the person of ectopic pregnancy still be pregnant?怀孕流血怎么回事, 是不是宫外孕?Be pregnant bleed how to return a responsibility, ectopic pregnancy?妊娠早期出血可能是流产或宫外孕的迹象.First trimester bleeding may signal a possible mi...
让他尽力使坏(或反对我)好了, 我不怕.Let him do his worst; I'm not afraid.不可轻易表示赞成或反对.Do not lightly express your approval or disapproval.这些情况确实奇怪,以致被援引作为非难或反对我们学说之用.These cases are so wonderful that they were introduced as difficul...