我现在在一个朋友那里更换链条和链轮，其实在出发前就该换的，因为他们还是已经跑了11000英里的原装货。

I'm here at a friend's to replace my chain and sprockets, something I should have done before I left as it is the original chain with 11, 000 miles on it.

youdao

这个链条就是思想的运作方式，因为思想就是过去。

This chain is the way of thought, for thought is the past.

youdao

不这样做，因为这可能会导致破损，变形和腐蚀这个链条。

Do not do this as this might cause breakage, deformation and corrosion of the chain.

youdao