(as) good as gold
01
非常乖巧, 行为模范
used to describe a very well-behaved and obedient individual, especially a child
例子
She's been as good as gold all morning.
她在课堂上非常乖巧，从不惹麻烦。
02
(of a thing) in a very good or desirable condition
idiom
informal
例子
Despite being mischievous at home, the children were as good as gold during the school field trip.
03
身体健康, 积极乐观
(of a person) having good health or positive outlook on life
idiom
informal
例子
After recovering from the illness, he's feeling good as gold and ready to get back to his normal routine.
康复后，她感到身体健康。
