tuck in/tuck into something
phrasal verb with tuck verb [ T usually + adv/prep ] uk/tʌk/ us/tʌk/
UK informal
尽情地吃，痛快地吃
to start eating something eagerly
Judging by the way they tucked into their dinner, they must have been very hungry. 看他们晚餐时那种狼吞虎咽的样子，一定是饿坏了。
There's plenty of food, so please tuck in. 食物充足，请尽情地吃吧。