You should learn to use a hammer before you pick up a nail gun. Likewise, you should become comfortable managing classes manually before you try to use more powerful tools.

在想要使用电动射钉枪之前要先熟练使用锤子，与此相似，在试图采用更强大的自动管理工具之前也要先能自如地手动管理这些类。

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Even pace is a piece of rock, it would burst out sparks, as long as you pick up the hammer drill steel.

即使脚步下是一片岩石，它也会迸发出火花，只要你拿起铁锤钢钎。

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Today, he's a Wisconsin state representative who calls on his experience quite often, even if he doesn't pick up a hammer much these days.

而今他是威斯康星州众议员，他经常回忆起自己的那段经历——尽管现在他很少拿起锤子干活。

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Salman Butt urged Pakistan's batsmen to pick up where the bowlers left off and hammer home their advantage over Australia when play resumes on Wednesday.

BBC: Australia pegged back by Pakistan in Lord's Test