dive in

US /daɪv ɪn/
UK /daɪv ɪn/
"dive in" picture
1.

投入, 大快朵颐

to start doing something with enthusiasm and without hesitation

:
When the food was served, everyone just dived in.
食物一上桌,大家就大快朵颐
Don't hesitate, just dive in and start learning.
别犹豫了,直接投入学习吧。
2.

跳入水中, 潜水

to enter water headfirst

:
He ran to the edge of the pool and dived in.
他跑到泳池边,然后跳了进去
The children were excited to dive in and play in the ocean.
孩子们兴奋地跳进海里玩耍。