My dad was low-key, just sort of letting me know he was disappointed with me.

我父亲很低调，只是有点儿像是让我知道，他对我感到失望。

youdao

Sitting in the economy class, he was polite and low-key.

坐在经济舱的低调，他很有礼貌。

youdao

Sitting in the economy class, he was polite and low-key.

坐在经济舱的低调，他很有礼貌。

youdao