What do you get when you cross a cow with a buffalo?
当你将一只奶牛和一只水牛杂交时你得到了什么?
A few required them to pass tests in the eleventh or twelfth grade to get a diploma, but to me, that was like closing the barn door after the cow is out.
有少数几个州要求学生在十一或十二年级时通过考试获得文凭,但在我看来,那等于是在奶牛已经跑出去了再关上牛圈的门——太迟了。
It's a lancet fluke: it's a little brain worm — a parasitic brain worm — that has to get into the stomach of a sheep or a cow in order to continue its life cycle.
这是一种枝双腔吸虫(lancet fluke),它是一种很小的活在大脑里的虫子,一种大脑的寄生虫,它必须要进入到绵羊或奶牛的肚子里才能继续活下去。
She was a milkmaid. She had to get up very early every morning and go to the barn to milk the cow.
VOA: special.2010.11.20
It's a big change in some of these very poor villages to get a cow.
奶牛对这些赤贫的村庄来说可是生财之道
So, it's awkward to have to wait for a cow to get infected before you can vaccinate a population.
在给人们预防接种之前,你只有干等着,直到有一头奶牛感染了病毒才行
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