机器不会有多余的零件。

Machines never come with any extra parts, you know.

youdao

全身没有任何多余的零件，即便孩子摔倒也不易被车身损伤。

The body does not have any spare parts, even if the child is not easy to fall body damage.

youdao

一个句子不应有废词，一个段落不应有废句，同理，一幅画里不应有多余的线条，一部机器不应有多余的零件。

A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts.

youdao