The key doesn't fit the lock.

这把钥匙打不开这把锁。

Confidence is the key to success.

信心是成功的关键。

They zeroed in on the key issues.

他们集中讨论了关键问题。

The key to success is preparation.

成功的关键是准备。

The key to his success is his logical mind.

他成功的关键在于他的逻辑思维。

We all believed that work was the key to success.

我们都曾经相信工作是成功的关键。

The key to success is to be ready from the start.

成功的关键是从一开始就做好准备。

He is expected to be the key witness at the trial.

预计他将成为审判时的关键证人。

The key question of what caused the leak remains unanswered.

泄漏究竟是怎么造成的，这一关键问题仍未得到答案。

He works extremely hard and therein lies the key to his success.

他工作极其努力，这就是他成功的关键。

He locked the heavy door securely and kept the key in his pocket.

他锁牢了那扇重门把钥匙放在了他的口袋里。

The driver of the car probably holds the key to solving the crime.

这位汽车司机很可能掌握破获这一罪案的关键证据。

They have decided to hire outsiders for some of the key positions.

他们决定在某些关键职位上聘任外来人员。

The key word here is diversify; don't put all your eggs in one basket.

这里的关键词是多样化投资，不要孤注一掷。

I heard the key turn in the front door and I was out of bed like a shot.

我听见钥匙开前门的声音，立刻从床上起来了。

The key to success as a romantic novelist is absolute belief in your story.

一个浪漫派小说家成功的关键在于对自己故事的绝对信念。

She turned the key in the lock.

她转动锁眼里的钥匙。

The key has stuck in the lock.

钥匙卡在锁里了。

He turned the key in the lock.

他转动钥匙开锁。

She rammed the key into the lock.

她将钥匙塞进锁眼。

She got the key stuck in the lock.

她把钥匙卡在锁里了。

I saw you put the key in your pocket.

我见你把钥匙放进了口袋里。

He fumbled the key into the ignition.

他笨拙地把钥匙插进汽车点火开关。

They put the key in the door and entered.

他们用钥匙开了门然后走了进去。

The key is hanging on a string by the door.

钥匙拴在门边的带子上。

She turned the key and the lid sprang open.

她一拧钥匙，盖子啪地打开了。

'Caution' is the key word in this situation.

在此情形之下，caution为关键词。

The key rasped in the lock and the door swung open.

钥匙在锁孔里发出刺耳的刮擦声，门猛地一下开了。

There are no sharps or flats in the key of C major.

C大调中没有升半音和降半音。

I took the key for the room off a rack above her head.

我从她头顶上方的一个架子上拿下了该房间的钥匙。