它是一个侧链伯氨基的蛋白质，具有重要的结构和化学作用的唯一载体。
It is the only carrier of a side chain primary amino group in proteins, having important structural and chemical roles.
介绍了一种端伯氨基聚醚的合成方法，对各种合成方法的特点作了简要的介绍，并且分析了两大类合成方法的优缺点。
The synthesis methods of amine-terminated polyether were introduced. The features of different synthesis methods were briefly reviewed, and two kinds of methods were discussed.
在那年最后的日子里，法伯给他的病人注射了一种还处于试验阶段的药物氨基喋呤。不到两个星期，男孩又能走路、聊天和吃饭了。
In the last days of the year, Farber injected his patient with an experimental drug, aminopterin, and within two weeks he was walking, talking and eating again.
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