break cover

suddenly leave a place of shelter, especially vegetation, when being hunted or pursued

（被追捕時）突然從藏身處（尤其是叢林中）出來

cover one's back (或 北美

(informal)foresee and avoid the possibility of attack or criticism

(非正式)預(yù)見并避免受攻擊（批評）

cover a multitude of sins

conceal or gloss over many problems or defects

隱瞞（掩飾）許多問題（缺點）

stucco could cover a multitude of sins, including poor brickwork.

粉刷可以掩飾許多毛病，包括很差的砌磚工作。

cover one's position

purchase securities in order to be able to fulfil a commitment to sell

購買證券為了實現(xiàn)可以出售的承諾

cover one's tracks

conceal evidence of what one has done

隱瞞證據(jù)

cover the waterfront

(N. Amer. informal)include a wide range of things; cover every aspect of something

(北美，非正式)涵蓋很廣；包括事物的各個方面

while half the dishes are Italian, the kitchen covers the waterfront from Greece to Morocco.

盡管一半是意大利菜，炊事人員卻來自五湖四海。

from cover to cover

from beginning to end of a book or magazine

從（書或雜志的）第一頁到最后一頁，從頭到尾

under cover of

concealed by

在…掩護下

the yacht made landfall under cover of darkness.

游艇在夜幕的掩護下靠岸了。

under plain cover

in an envelope or parcel without any marks to identify the sender

在未注明發(fā)送者的信封（包裹）內(nèi)

under separate cover

in a separate envelope

在另函（另包）內(nèi)

cover something up

put something on, over, or around something, especially in order to conceal or disguise it

遮蔽；遮蓋；掩蓋；掩飾

cover (one's) tracks

To conceal traces so as to elude pursuers.

滅跡：掩蓋痕跡以甩掉追蹤者

cover (the) ground

To traverse a given distance with satisfying speed.

越過：以令人滿意的速度越過指定距離

To deal with or accomplish something in a certain manner

處理，完成：以某種方式處理或完成某事

The history course covered a lot of ground in six weeks.

歷史課在六周內(nèi)涉及很廣

take cover

To seek concealment or protection, as from enemy fire.

躲藏：為躲避敵人火力而尋求躲藏或保護