Remove the front cusp, raise the shelf, and you've got our human molars.

移除前尖端，提升牙架，你就得到我们人类臼齿。

The tricuspid valve has three little flaps, or cusps.

它有三个小瓣，或尖瓣。

Over time, the cusps were pushed out of line to make triangular crowns.

随着时间推移，这些尖端逐渐移位，形成了三角形牙冠。

You do appear right on the cusp of something.

你在职场上可真是炙手可热。

The scientists say it’s on the cusp of a comeback.

而如今他们表示，这次开发可以算得上是上次尝试回归。

The president says the nation's " on the cusp" of fundamentally changing the pandemic's nature.

拜登总统表示，美国正处于能够根本上应对这场疫情" 风口浪尖" 。

We've gone from economic crisis to recovery to the cusp of genuine resurgence

我们济危机阴影中, 向了真实复苏顶点。

Mr. Johnson said Britain was on the cusp of a rapid spread that demanded more draconian countermeasures.

约翰逊表示，英国处于疫情迅速蔓延风口浪尖，需采取更为严厉应对措施才行。

Small cusps were then added, so the tooth had three in a row, aligned front to back, and connected by crests.

后，更小尖端现，所以一颗牙齿有成排三个尖头，前往后排列，并由凹槽相连接。

The handsome young buck, Armand, in his check-me-out yellow jacket, caught on the cusp between teenage innocence and manly swagger.

还有英俊小伙阿尔芒，身穿醒目黄色短大衣，正处于青少年天真与成年人狂妄交汇点。

This is prevented by tiny white cords that anchor the cusps to the wall of the ventricle.

这是由细小白色绳索阻止，这些绳索将尖端固定在心室壁上。

We are on the cusp of so many great discoveries. I absolutely believe this is a fight we can win.

我们在这一领域取得重大突破，有很多伟大发现。我坚信我们可以赢得这场战役。

I'm on the cusp of signing that kid.

我准备签这个孩子了。

You are on the cusp, Peter.

你现在站在风口浪尖 彼得。

I'll stop, it's on the cusp of embarrassing, isn't it?

堆堆我还是停吧 尴尬边缘了 是吧？

I was on the cusp of sending the servants out looking for you.

我正要派仆人门找你。

And the American state of New York is on the cusp of having more confirmed virus cases than any single country.

美国纽约州确诊病例即将超过任何国家确诊数量。

The world is on the cusp tonight of one million deaths from COVID-19, including some 205,000 here in the United States.

今晚，全世界正处在疫情导致100万人死亡风口浪尖上，其中包括美国约20.5万人。

Rising rates will effect homebuyers in pricier coastal cities, where they're more often right on the cusp of qualifying for a home mortgage.

利率上升将影响到房价较高沿海城市购房者，这些城市购房者通常正处在获得住房抵押贷款资格边缘。

That being said, that contraction pumps the blood out the pulmonary valve, which just like the tricuspid valve has three cusps and also prevents blood from going backward.

也就是说，心脏收缩将血液泵肺动脉瓣；与三尖瓣一样，肺动脉瓣也有三个尖瓣，也可防止血液倒流。