Good hand tools are not developed by accident.

好的手工具绝不是意外研发成功的！

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At first we used hand tools.

首先我们使用手工工具。

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Why do we use hand tools?

人类为什么要使用手动工具？

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How do a bunch of guys with hand tools build all this?

那帮人怎么靠手工工具造出这些来的？

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Check that hand tools are in good condition before use.

使用手工具前先检查它是否完好无损。

youdao

Can you can think of a way that people may get hurt using hand tools?

您能想象到手动工具造成伤害的方式吗？

youdao

Hand tools are relics of the past that have now been superseded by the machine.

手工工具是过去的遗物，现在已被机器取代。

《柯林斯英汉双解大词典》

Hand tools are relics of the past that have now been superseded by the machine.

手工工具是过去的遗物，现在已被机器取代。

《柯林斯英汉双解大词典》