1·Let the nail biting begin.
我又要开始咬指甲了。
2·One of my worst is my nail biting.
我最严重的坏习惯就是咬指甲。
3·Nail biting, thumb sucking, hair twirling, foot tapping.
爱咬指甲，吮姆指，绕头发，跺脚。
4·Nail biting is often a subconscious reaction to tension.
咬指甲通常是紧张时的下意识反映。
5·Nail biting, constant pacing, and heavy drinking may ensue.
可能产生咬手指甲，经常踱步，酗酒这些行为。
6·Psychotherapists have had some theories about nail biting, of course.
当然，心理学家在咬指甲方面有许多理论。
7·Nail biting or picking has also been linked to obsessive-compulsive disorder.
咬或剔甲还与强迫性障碍有关。
8·Nail biting isn't harmful to your health, but it can make your nails look pretty unattractive.
咬指甲不会对你的健康造成伤害，但是会使你的指甲看起来相当不美观。
9·Much like nail biting, gum snapping can become an unconscious behavior used to relieve stress or boredom.
很像咬指甲，嚼口香糖可以成为缓解压力或摆脱无聊习惯使用的无意识行为。
10·While nail biting is not generally harmful, if you attack the cuticles you can risk bleeding and bacterial infection.
虽然啃咬指甲通常不会使人受伤，但如果你咬伤了指甲周围的皮肤，仍然会导致出血并可能造成细菌感染。