chuckle

輕聲笑、低聲笑

He chuckled quietly as he read the message on his phone.

他看著手機上的訊息，輕聲笑了起來。

暗自竊笑、偷笑

She chuckled to herself about the mistake all afternoon.

她整個下午都為那個錯誤暗自竊笑。

輕笑、低笑聲

There was a soft chuckle from the back of the room.

房間後方傳來一聲輕笑。