He came to the river and jumped in.他来到河边跳了下去。

The bath was cold but he jumped in anyway.浴缸的水很凉, 但他还是一下就扎进去了。

Jump in!快上车！

She told the taxi driver to hurry and jumped in.她一头钻进出租车, 告诉司机快开车。

The Government had to jump in and purchase millions of dollars worth of supplies.政府不得不匆忙购进价值数百万美元的补给品。