to become involved, or have contact, with someone or something again, for a second, third, etc. time

The campaign is trying to help former students re-engage with the university.

Ex-prisoners should be encouraged to reengage in society. 应鼓励刑满释放人员重新融入社会。

to interest someone in something again for a second, third, etc. time, and keep them thinking about it

More straightforward campaigning might just reengage the voting public.

Environmental groups have to re-engage mainstream Australia. 环保组织需要重新吸引澳大利亚主流社会的参与

to engage part of a machine or your body (= make it fit into and move together with another part) again, for a second, third, etc. time

Manual override is provided to re-engage the motor.

During the course of losing weight, I had to re-engage muscles that were engaged automatically before. 在减肥的过程中，我不得不重新激活之前伸张自如的肌肉。

When the throttle is applied, the clutch automatically re-engages.

to employ someone again

Why have we re-engaged him on another year's contract?

She was made redundant in 2020, but was re-engaged in late 2021. 她在2020年被裁员，但在2021年底重获聘用。