A jazz singer crooned softly in the hotel lobby as guests checked in for the conference.

會議賓客辦理入住時，一位爵士歌手在飯店大廳輕聲低吟。

During the company dinner, our sales manager crooned an old love song to loud applause.

公司聚餐時，我們的業務經理低聲哼唱一首老情歌，贏得熱烈掌聲。

The airline's new commercial features a pilot crooning a lullaby to calm nervous passengers.

這家航空公司的新廣告中，一位機師輕聲哼唱搖籃曲，安撫緊張的乘客。