He said he would get it, but first he wanted to know how big she thought the moon was.
VOA: special.2009.03.28
It's very water soluble and it's a big molecule, a very big molecule; it can't naturally get inside cells on its own.
它是一个水溶性极强的大分子,非常非常大的分子,质粒在自然状态下并不能自己进入细胞
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
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