crack a book

(N. Amer. informal)open a book and read it; study

(北美，非正式)研讀；學習

crack a bottle

open a bottle, especially of wine, and drink it

開瓶（尤指開葡萄酒的酒瓶）喝酒

crack a crib

(Brit. archaic, informal)break into a house

(英，古，非正式)破門而入

crack of dawn

a time very early in the morning; daybreak

黎明；拂曉

crack of doom

a thunder peal announcing the Day of Judgement

世界末日的霹靂

crack of the whip

(Brit. informal)a chance to try one's hand at or participate in something

(英，非正式)嘗試機會；參與機會

individuals who feel that they have not had a fair crack of the whip.

感覺沒有公平機會的個人。

cracked up to be

[with negative](informal)asserted to be (used to indicate that someone or something has been described too favourably)

(非正式)斷定（指對某人某事某物的優點夸大地宣揚）

life on tour is not as glamorous as it's cracked up to be.

旅行生活并不像所吹噓的那樣迷人。

crack wise

(N. Amer. informal)make jokes

(北美，非正式)開玩笑；說笑話

crack down

To act more forcefully to regulate, repress, or restrain

嚴厲取締：采取嚴厲措施來規定、抑制或約束

The police cracked down on speeding.

警察取締超速行車

get cracking

(informal)act quickly and energetically

(非正式)積極迅速地行動

most tickets have been snapped up, so get cracking if you want one.

大部分票都被一搶而空了，想要的話得趕快行動了。

slip (或 fall) through the cracks

(N. Amer.). another way of saying slip through the net (see net)

(北美)。 同 slip through the net （見 net）

crack down on

(informal)take severe measures against

(非正式)采取嚴厲措施；嚴厲打擊

we need to crack down hard on workplaces that break safety regulations.

我們必須嚴懲不守安全規則的工場。

crack on

(informal)proceed or progress quickly

(非正式)快速前進；迅速進步

we'll &B{crack on with} the second half of the job this month.

這個月我們要加快下半部分工作的進程。

crack up 【非正式用語】

To praise highly

高度贊揚

He was simply not the genius he was cracked up to be.

他不象人們所贊揚的那樣是個天才

To damage or wreck (a vehicle or vessel)

撞車：在事故中撞毀一輛汽車

crack up a plane; crack up a boat.

撞毀了一架飛機；撞沉了一條船

cracked up on the expressway.

在高速公路上撞車了

To have a mental or physical breakdown.

崩潰：在精神上或體力上的崩潰

To experience or cause to experience a great deal of amusement

大笑：經歷或使經歷極大的快樂

really cracked up when I heard that joke.

聽到那個笑話我真想大笑