The person you help may never help you in return, but whenever you need it, you'll find someone you've never helped before on hand.

你帮助过的人也许不会回报你。但是无论何时你需要，在唾手可得之前，你将会找到你从未曾帮助过的人。

youdao

Whenever a computing job seems tedious or error-prone -- updating documents "by hand," for example -- you should be on the lookout for a way to automate the process.

每当计算作业似乎有些单调乏味或容易出错时 — 例如，“手工”更新文档 — 您就应该寻找使该过程自动化的方法。

youdao

I'd be glad to lend a hand whenever you need me.

无论你什么时候有需要，我都乐意帮忙。

youdao

So I want to welcome you, I really want to invite you, whenever you've got some reactions to the things that I'm saying, raise your hand, I'll call on you.

所以我欢迎你，我真的邀请你，无论什么时候,你对我所说的有回应，举起你的手，我会叫你的。

耶鲁公开课 - 死亡课程节选

The car dealer then went on to explain that he made it a practice that whenever anyone bought a car from him, he hand wrote a thank you card for their business.

FORBES: Customer Service 101: Thank You Cards and Doughnuts