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?
Plus you would loseall of the cross linking that you get with the electronic edition.
而且这样也就没法得到电子版里面的所有交叉链接了。
Tryptophan has to fight with other amino acids to cross the blood-brain barrier and get into the brain.
色氨酸必须打败其他的氨基酸,才能通过血管-大脑的障碍物,到达大脑。
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