他用一块旧破布把管子上的那个洞塞住了。

He plugged the hole in the pipe with an old rag.

《牛津词典》

通过把这些旧自行车的部件（管子呀，座椅之类的）重新组装焊接，设计出来这款简单而又实用的城市公共设施。

By reutilizing and welding discarded tubes and saddles the old bike parts can be re-incorporated into the public realm as a simple useful urban furniture piece.

youdao

你怎么竟敢不问我一声就把我的旧管子扔掉呢？

How dare you chuck away my old pipes without asking me?

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在新、旧管子连接处安装绝缘法兰，破坏了长管道的原电池，即：阳极(新管子)和阴极(旧管子)间电断路。

By insulating flange at the junction between the new and old pipe, the long line galvanic cell is "broken up" - the anode (new pipe) is electrically separated from the cathode (old pipe).

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当新管子和生锈旧管子相连时，新管子相对于旧管子常为阳极。

When new pipe is connected to old rusty pipe, generally, the new pipe is anodic to the old pipe.

youdao

当新管子和生锈旧管子相连时，新管子相对于旧管子常为阳极。

When new pipe is connected to old rusty pipe, generally, the new pipe is anodic to the old pipe.

youdao