01.

罕见

Scarce as (a) hen's teeth - Rarity. Something that you would not often or easily come across.

• Seeing Jim at the dentist is as scarce as a hen's teeth.

  看到吉姆去看牙医真是稀罕事。

  
  

• On a rainy night, taxis are as scarce as hen's teeth.

  在雨天的晚上，出租车真的很少见。

  
  

02.

对某事很积极

Sink one's teeth into sth - Do something with a lot of energy and enthusiasm.  

• When Julie got promoted, she immediately sank her teeth into her new job.

  朱莉升职之后，立刻投入到她的新工作中。

  
  

• Try and sink your teeth into this report, and it will help.

  试着认真读这份报告，它会对你有帮助的。

  
  

03.

小孩子长牙，初期问题

Teething problems - small problems that happen when a business, project, system, etc. is first started or used.

• There were a lot of teething troubles in the first year.

  第一年有很多初期的困难。

  
  

• There were the usual teething troubles at the start of the project, but that's to be expected.

  在这个项目开始时，通常会有一些初期的困难，但那是预料之中的。

  
  

04.

抽搐的

Throb - (to produce a strong, regular beat) If a part of your body throbs, you feel pain in it in a series of regular beats usually due to your heartbeat.

• His head and body throbbed.

  他的头和身体都很痛。

  
  

• I have a throbbing toothache.

  我的牙疼得厉害。

  
  

05.

止疼药

Painkiller - A drug or medicine for relieving pain.

• Do we have any painkillers in the house?

  家里有止疼药吗？

  
  

• I think we run out of painkillers. I'll go to the store to buy some more.

  我想我们把止疼药用完了，我要去商店再买一些。

  
  

06.

让某人不舒服

Set your teeth on edge - Cause someone to feel intense discomfort or irritation (especially of a harsh sound).

• The buzzing sound set her teeth on edge.

  嗡嗡的声音让她觉得很不舒服。

  
  

• The atmosphere in this bar is setting my teeth on edge. Let's leave.

  酒吧的环境真的让我很不舒服，我们走吧。

  
  

07.

咬紧牙关，坚定做某事

To grit one's teeth - To be determined to do something in spite of the difficulties involved.

• To reach safety I had to grit my teeth and wade through the mud.

  为了安全起见，我不得不咬紧牙关，涉过泥泞。

  
  

• I want to grit my teeth and go to the dentist, but I can't. I hate the dentists.

  我想咬咬牙去看牙医，但我不能。我讨厌牙医。

  
  

08.

满口谎言

Lie through one's teeth - To lie openly and brazenly, knowing that what one saying is completely false.  

• I saw him breaking the window. If he denies it, he's lying through his teeth.

  我看见他打破了窗户。如果他否认了，他就是满嘴谎言。