He laughs, somewhat mirthlessly.

他笑了，笑得有点阴郁。

youdao

Life time is precious, I would like to run out of it on the way with you, expecting there will be sunshine in your heart, mirthlessly and happily like the brave flower.

生命何其珍贵，我愿意陪你耗尽在路上，只愿你心宽畅，忧伤地幸福地像花儿一样。

youdao

Mr.Song laughed mirthlessly afterward, saying the man in the Hyundai was a boyhood friend of his youngest son and hated outsiders but probably would not hurt a family friend.

宋老伯后来苦笑了一下，说道那部现代车上的人是他小儿子的发小，很厌恶外来者但是对他们这些人还行。

youdao

In an interview broadcast last Wednesday, Clinton nods her head patiently throughout, as if to humor Dan Rather, and laughs loudly and mirthlessly when he asks about her mysterious marriage.

CNN: Uh-oh, the real first lady shows up