Social customs provide a vital link between generations.

社会风俗在代与代之间起到了极其重要的纽带作用。

《牛津词典》

Every man is a vital link in the great chain.

每个人都是锁链中至关重要的一环。

youdao

The Great Wall of China had a vital link to the Forbidden City.

中国的长城对于紫禁城来说是一个很重要的环节。

youdao

Including a "dead" variable is important as it is a vital link in the food chain.

BBC: The model should aid future management of the North Sea

"Trains are a vital link in the accessible transport chain, " said transport minister Charlotte Atkins.

BBC: Photo of wheelchair user on tube platform

Mr Markelov had been a vital link between anti-fascist activists, such as Ms Baburova, and the police.

ECONOMIST: The far right in Russia