be completely convinced 心悦诚服

“心悦诚服”，汉语成语，意思是由衷地高兴，真心地服气。指真心地服气或服从。可以翻译为“be completely convinced，have a heartfelt admiration”。

例句：

他输得心悦诚服。

He conceded defeat from the bottom of his heart.

我们对他的观点心悦诚服。

We embraced his view whole-heartedly.