The DID chain that arrived was 120 links, so I used a grinder to flatten off one of the pins and knock the chain down to 106 links.

在抵达的DID链为120的联系，所以我用磨床拉平了一个引脚和敲链下跌至106的联系。

youdao

Insects are fairly low down (on) the food chain.

在食物链中，昆虫是相当低的一级生物。

《牛津词典》

He looked down to relieve the pain of his neck, and stared at the rusty chain at his feet, which coiled around a metal rod.

他低下了头来缓解脖子的疼痛，眼睛停留在脚下生锈的铁链上，那铁链绕在一根金属杆上。

youdao

A few years ago, OhioHealth,a hospital chain, decided to help its overweight employees slim down and lead a healthier life style.

VOA: standard.2010.07.16

The other chain is facing in the other direction, the 3' carbon is up, the 5' carbon is down.

对面的那条单链方向相反,3'位的碳原子向上,5'位的碳原子向下

耶鲁公开课 - 生物医学工程探索课程节选

They're colored different here to indicate one new difference that you know about now, and that's that there is an orientation, there's an up and down on the chain.

这里被涂成不同的颜色,来表示另一个不同之处,它是有方向的,表示双链一条向上,一条向下

耶鲁公开课 - 生物医学工程探索课程节选

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