The tricuspid valve has three little flaps, or cusps.

它有三个小瓣，或尖瓣。

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

移除前尖端，提升牙架，你就得到我们人类的臼齿。

You do appear right on the cusp of something.

你在职场上可真是炙手可热。

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，形成了三角形的牙冠。

Well, just back from the cusp.

只要离开波峰就行。

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

而如今他们，这次开发可以算得上是上次尝试的回归。

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

拜登总统，美国正处于能够从根本上应对这场疫情的" 风口浪尖" 。

But we're right at the cusp of that, in sort of the domestic cat's evolution.

但我们对整个趋势的看法是对的，猫猫在人类驯服中发生的演变。

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

我们已经从经济危机的阴影中走出来, 走向了真实复苏的顶点。

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

约，英国已经处于疫情迅速蔓延的风口浪尖，需采取更为严厉的应对措施才行。

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

后来，更小的尖端出现，所以一颗牙齿有成排的三个尖头，从前往后排列，并由凹槽相连接。

When I say that we're on the cusp of finally delivering that vision, there's actually reason to believe it.

当我说我们即将实现这样的设想。你完全有理由可以相信我。

Pareiasaurs had teeth with lots of little cusps on them, like human molars.

帕雷亚龙的牙齿上有很多小尖头，就像人类的臼齿一样。

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

我们在这一领域已经取得重大突破，有很多伟大的发现。我坚信我们可以赢得这场战役。

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

这是由细小的白色绳索阻止的，这些绳索将尖端固定在心室壁上。

We are on the cusp of a revolution.

我们正处于一场革命的风口浪尖。

Because there's so much potential waiting right at the cusp.

因为在风口浪尖上有太多的潜力等待着。

Perhaps the business cycle is now on the cusp of turning.

或许商业周期现在正处于转折点。

They were on the cusp of winning the first two weeks.

他们在前两周就处于胜利的边缘。

Computer scientists say we are on the cusp of an artificial intelligence revolution.

计算机科学家说我们正处于人工智能革命的风口浪尖。