tuck in/tuck intosth
—phrasal verbwithtuckverb[Tusually+ adv/prep]uk/tʌk/us/tʌk/
UKinformaltostarteatingsomething eagerly
尽情地吃，痛快地吃
Judging by the way theytuckedintotheirdinner, they must have been veryhungry.看他们晚餐时那种狼吞虎咽的样子，一定是饿坏了。
There's plenty offood, sopleasetuckin.食物充足，请尽情地吃吧。