There's no doubt that these are challenging times.

She performed the most challenging task without a mistake.

她毫无差错地完成了这一最富有挑战性的任务.

Let's yell out beautiful, practical and challenging sentences to crack your pronunciation.

让我们喊出漂亮, 实用有意义的句子来突破英语发音.

Thus, empirical modeling of housing market behavior is a challenging task.

因此, 建构住宅市场行为的实证模型是一项极具挑战性的工作.

The scaling problem is the most challenging.

结垢是最复杂的问题.

Few shots are as challenging as the low volley.

很少有一种击球比低位截击更具挑战性.

Although automatic text translators are now reasonably effective, voice recognition has proved more challenging.

尽管自动文本语言翻译目前相当有效, 语音识别还是十分具有挑战性的.

It is well known that operating a process under unstable conditions is a challenging control problem.

众所周知,将程序操作在不稳定点的条件上是很具挑战性的控制问题.

The law must have teeth, and it must be enforced.

法律必须拥有效力，而且必须强制实施。

He suddenly smiled, revealing teeth that had recently been capped.

他突然笑了出来，露出了刚箍过的牙。

The bear exposed its teeth in a muffled growl.

那只熊龇出牙齿，发出一声低沉的吼叫。

I can't understand why folks complain about false teeth.

我就不明白，人们为什么老是抱怨假牙的问题。

Brush your teeth after each meal and floss daily.

餐后要刷牙，而且每天要使用牙线清洁牙缝。

I felt like I was being kicked in the teeth every day.

我觉得每天都在遭受失望的打击。

He won, but only by the skin of his teeth.

他赢了，但是赢得十分勉强。

Having teeth attached to the edge of the jawbone without sockets.

长有颌缘牙的、端生齿的动物.

His eyes nearly jumped from their sockets in surprise.

他惊讶得眼珠子差一点跳出来.

In ginza avenue, the silver is divided into east and west sockets.

以银座大道为界, 银座分为东、西银座.

We can split the system into many packages linked with plugs and sockets.

我们可以将此系统分成许多用插头和插座连接起来的部件.

Miss Pao flushed crimson and her big eyes seemed about to pop out of their sockets.

鲍小姐脸飞红,大眼睛像要撑破眼眶.

Your eyes are set in sockets.

你的眼睛是嵌在眼窝里.