对于这些中国人来说,是不是不切割石棉瓦,不干严重危害自己生命的事情,一样没有生存的空间?
For these Chinese people, whether or not cutting up asbestos boards is something seriously endangering their lives, is there no living space?
In this case, this particular restriction enzyme cuts symmetrically like this, but not at the same point.
在我们这种情况下,这个限制性内切酶总是这样对称地切割,但两条链切割的位点不一样
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