他有咬指甲的讨厌习惯。
这真让人难以忍受，很不自在，这让你想咬指甲或者干脆夺门而出。
It's unbearable and uncomfortable, and it makes you want to bite your nails or just run out of the room.
她咬指甲都咬到了活肉。
我又要开始咬指甲了。
爱咬指甲，吮姆指，绕头发，跺脚。
我最严重的坏习惯就是咬指甲。
戈登：我咬指甲。
我们必须使这个孩子改掉咬指甲的习惯。
咬指甲是一个不好的习惯。
我们必须使这个孩子改掉咬指甲的习惯。
他养成了咬指甲的坏习惯。
她正在神经质地咬指甲。
我曾劝阻他不要咬指甲。
他有咬指甲的坏习惯。
那些女学生说悄悄话咬指甲的日子是过去了。
Those schoolgirl days of telling tales and biting nails are gone.
大多数人一天中至少一次会无意识地咬指甲。
Most people, at least once per day, will lose concentration on not biting their nails.
你为什么老是咬指甲？
但是如果你咬指甲或不断地吃泡泡糖将会怎样？
约翰坐在那里咬指甲时，我正在制定一个回家的计划。
While John was sitting biting his nails, I was working out a plan to get us home.
你咬指甲吗？
最后是“操控型”语言，属于个人的小动作，比如咬指甲。
Last are "manipulations," which are personal grooming tics, such as biting your fingernails.
看这篇文章的时候，你是不是正在无意识地绕弄头发或者咬指甲？
Are you mindlessly twisting your hair or biting your nails as you read this article?
许多处于紧张状态的人，实际上都会咬指甲，这就是这个表达的来源。
Many people who are nervous do actually bite their nails, which is where this expression comes from.
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。
Nail biting isn't harmful to your health, but it can make your nails look pretty unattractive.
如果你时不时会咬指甲，没有什么可担心的——这可能不会有太大的伤害。
If you do bite your nails from time to time, there's no need to worry - you're probably not doing much harm.
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。
Much like nail biting, gum snapping can become an unconscious behavior used to relieve stress or boredom.
事实上，几篇为数不多关于咬指甲的文章公开评述该问题上的文献严重不足。
Indeed, several of the few articles on nail-biting open by commenting on the surprising lack of literature on the topic.
是的，我在写这篇专栏的时候确实咬指甲了。有时就算是一个好理论也帮不上忙。
And, yes, I did bite my nails while writing this column. Sometimes even a good theory doesn't help.
是的，我在写这篇专栏的时候确实咬指甲了。有时就算是一个好理论也帮不上忙。
And, yes, I did bite my nails while writing this column. Sometimes even a good theory doesn't help.
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