moan

/moʊn/

an utterance expressing pain or disapproval

中文释义：呻吟声；抱怨

The patient let out a low moan when the nurse touched his wound.

当护士触碰他的伤口时，病人发出低沉的呻吟声。

There were moans of disapproval from the audience during the speech.

演讲期间，观众发出了不满的抱怨声。