"plunge in" in Chinese (Simplified)
投入介入跳入（比喻）
Definition
以极大热情或能量开始做某事，通常没有太多犹豫或准备。可以字面指跳入水中，也可比喻开始某项活动。
Usage Notes (Chinese (Simplified))
多用于非正式语境，表示积极、热情地投入某事，常与“工作”“讨论”“项目”等搭配。可表达积极性，有时也带有缺乏谨慎之意。
Examples
She took a breath and plunged in.
她深呼吸了一下，**投入**进去。
We all plunged in when the swimming pool opened.
游泳池一开放，我们都**跳了进去**。
He just plunged in and started fixing the car.
他就这么**投入进来**，开始修车。
Sometimes you just have to plunge in and figure things out as you go.
有时候你得**勇敢投入**进去，边做边学。
As soon as the meeting started, she plunged in with her ideas.
会议一开始，她就**积极发表**了她的想法。
He likes to plunge in without reading the instructions first.
他喜欢**直接投入**，不先看说明书。