请把锤子和钉子递给我。
我们走入一户人家，丈夫和妻子正蹲伏在地上，手里拿着锤子和钉子。
As we entered one home, a husband and wife were crouched over their floor with hammer and nails.
如果你只是阅读了一些锤子和钉子的理论，从来不使用工具，你就不可能成为一个木匠。
You cannot be a carpenter if you just read about hammers and nails, and never use a tool.
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