Black started to laugh, a horrible, mirthless laugh that filled the whole room.

布莱开始大笑，一可怕、没有欢乐的大笑充满了整个房。

It was a grating unpleasant laugh, not only mirthless, but meaningless.

那是一刺耳的、令人不快的笑声， 不仅无趣，而且毫无意义。

It was a curious laugh; distinct, formal, mirthless.

这是一奇怪的笑声。独特、正式、沉闷。

Wormtail muttered something so quietly that Frank could not hear it, but it made the second man laugh -- an entirely mirthless laugh, cold as his speech.

虫尾巴又嘟囔了几句什么，声音太低，没有听清，但他的话使第二个男从哈哈大笑起来--这是一十分阴险的笑，跟他说的话一样寒气逼人。

And still, Voldemort and Harry looked at each other, and now Voldemort tilted his head a little to the side, considering the boy standing before him, and a singularly mirthless smile curled the lipless mouth.

哈利和伏地魔仍然注视着对方，这时伏地魔微微把头偏向一旁，打量着站在他眼前的这个男孩，无唇的嘴角微微上扬，露出了一个罕见的笑容。