1. as good as gold
Our new puppy is as good as gold.
She's been as good as gold all morning.
The children behaved well and were as good as gold.
You can trust Michaela: she is as good as gold.
英語 "という言葉tak dobre jak złoto"(as good as gold)集合で発生します。
2019.01.07 - idioms (as as)