plunge in

• • 头朝下跳入水中；使浸入：

    He ran to the edge of the lake and plunge in.

    他跑到湖边，跳进水里。

  • 积极参加：

    They asked him to help,so he just plunged in.

    他们要求他帮助，因此他就参与了。

  • 猛力或用力把…刺入：

    He picked up the knife and plunged it in her heart.

    他捡起刀，刺进了她的心脏。

  • 陷入：

    It is no good talking to my father when he is plunged in thought he won’t hear you.

    当父亲陷入深思的时候，同他讲话没有用，他不会听你说话。