lipless

1.Snape, however, looked calmly back into Voldemort's face and, after a moment or two, Voldemort's lipless mouth curved into something like a smile.

斯内普，平静应魔的脸，过了些或者很长，魔那没有嘴唇的嘴巴弯曲得似乎在笑。

2.Snape, however, looked calmly back into Voldemort's face and,  after a moment or two, Voldemort's lipless mouth curved into something like a smile.

斯内普却沉着的回视着魔的脸，过了会儿，魔那没有嘴唇的嘴微微弯曲了下，像是在笑。