gape in surprise
gape wide open
gape in wonder
A: Look! The boy gapes at the giant cake.
A：看！那个男孩正张着大嘴盯着那个巨大的蛋糕。
B: He must be really hungry.
B：他一定很饿了。
1) 张大嘴巴看
2) （洞口）大张着
3) 目瞪口呆
1. 张大嘴巴看
verb
1. To stare with the mouth wide open, especially in surprise.
Synonym: stare, gawk