「何も聞いていないので何も言えない」と困惑の表情を浮かべた。

tbd

He said with a perplexed expression, "I've heard nothing, so I can't say anything."

ほお紅や口紅を差すだけで表情や笑顔がどんどん変わってくるんです。

tbd

Expressions and smiles change like that just from applying rouge and lipstick.

表情が明るくなった。

tbd

His face cleared.

表情から判断すると、彼は機嫌が悪い。

tbd

Judging from his expression, he's in a bad mood.

Judging from his expression, he is in a bad mood.

彼女は目に懇願の表情を浮かべていた。

tbd

There was a look of appeal in her eyes.

彼女は悲しそうな表情をしていた。

tbd

She wore a sad expression.

彼女は高慢な表情で私を見て、歩き去った。

tbd

She gave me a haughty look and walked away.

彼女はむっつりとした表情を浮かべていた。

tbd

She had a sullen look on her face.

彼女はいつも真剣な表情をしている。

tbd

She always has a serious look on her face.

彼女の表情に私は困惑した。

tbd

I was confused with her expression.

I was confused by her expression.

I was confused by the expression on her face.