尼古尔逊博士之所以对此感兴趣, 是因为胆碱对脂肪的新陈代谢必不可少, 但是狗却不能对此综合利用.
The reason for Dr Nicholson's interest was that choline is essential for metabolising fat, but dogs cannot synthesise it themselves.
脂族胺尼古尔逊博士了解到了狗对胆碱的吸收能力。
Aliphatic amines gave him some indication of how much choline the dogs were able to absorb.
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