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。



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