本发明公开了一种筛选丁醇产生菌突变株的方法。
The invention discloses a method for screening a mutant strain of a butanol producing strain for removing catabolic repression of glucose.
利用威廉姆斯博士的方法，宇航员乔治完成了首个小株采种太空实验，并将一株植物移植到太空花园中。
Using Dr. Williams's method, astronaut George completed the first seed-to-seed experiment in space, and moved one plant closer to a garden in space.
但树和灌木就是很难区分的，因为没有一种方法来区分一棵树和一株灌木，其中一种不知不觉地渐变为另一种。
But tree and bush are hardly that, since there is no way to define a tree versus a bush. The two categories grade insensibly into one another.
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