be like a kid in a candy store
US /bi laɪk ə kɪd ɪn ə ˈkæn.di stɔːr/
UK /bi laɪk ə kɪd ɪn ə ˈkæn.di stɔːr/

1.
像糖果店里的孩子一样, 非常兴奋和高兴
to be extremely excited and happy about something, often to the point of being overwhelmed or giddy
:
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When he saw all the new gadgets, he was like a kid in a candy store.
当他看到所有新奇的小玩意时,他就像一个在糖果店里的孩子。
•
She was like a kid in a candy store when she visited the art supply shop.
当她参观美术用品店时,她就像一个在糖果店里的孩子。