7.It's the only problem worth working on in chemistry. It's the norbornyl cation problem!
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It's the only problem worth working on in chemistry. It's the norbornyl cation problem!
它是化学里唯一值得研究的东西，它就是降樟基阳离子的问题！
Cowpea crossbreeding has the problem that fructify cation is low according to the traditional method.
豇豆杂交育种按照传统的方法存在坐果率低的问题。
Only when parents confront the problem seriously will the situation in which many children are denied a carefree va cation be reversed.
只有当家长们认真对待这个问题时，孩子们被剥夺无忧假期的局面才能得以改正。
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