Once the ovum is released it has a lifespan of 12 to 36 hours.卵子排出后可存活12至36小时。an immature ovum未成熟的卵细胞One way is taking the cell from a fertilized ovum.一种方法是从受精卵中取出细胞.By day 11 the ovum begins to attach and implant in the...
Water transportation was outmoded by railroads and good pikes.水上运输已因铁路和良好的税道而变得过时了.The political system has become thoroughly outmoded.这一政治体制已经完全落伍了。To my thinking they will be outmoded in four years.据我看来,四年之后这些就会过时.Roma...
It is a tedious, humourless load of crap.那是一堆枯燥乏味、毫无幽默感的废话。He showed his teeth in a humourless grin.他一本正经地咧嘴笑了笑。He was a straight-faced, humourless character.他是个一脸严肃相、缺乏幽默感的人。...
The prospects are that he will give opponents a thorough pounding.他很有可能使对手们一败涂地。His heart was pounding, as if he were frightened.他的心怦怦跳，似乎被吓坏了。I'm sweating, my heart is pounding. I can't breathe.我浑身冒汗，心脏狂跳，呼吸困难...