胡学兵对于石膏的纯熟运用和他的祖先如出一辙。

Hu Xuebing can use gypsum as skillfully as his ancestors.

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学兵说他的儿子现在把挖土机当做大玩具，经常恳求开一下。

Xuebing said his son now see the excavator as a big toy and often pleads to drive it.

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直到最近，科学家才发现原来毛毛虫普遍也有自己的“化学兵工厂”。

What scientists have only recently discovered, however, is that the common caterpillar is not without its own Arsenal of chemical agents.

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