1、lock up

把…鎖起妥藏

Give away any food you have on hand, or lock it up and give the key to the neighbours.

把手頭的所有食物都送給別人，或者把食物藏好鎖起，然后將鑰匙交給鄰居。

Control of materials could be maintained by locking up bombs.

把炸彈鎖起妥藏可實現對物資的控制。

把…關入監獄

Mr Milner persuaded the federal prosecutors not to lock up his client.

米爾納先生說服聯邦檢察官不把他的當事人關起來。

You are mad, Isabel. You should be locked up.

你瘋了，伊莎貝爾。應該把你關起來才是。

鎖好（建筑物或汽車的）門窗

Don't forget to lock up.

別忘了鎖好門窗。

Leave your car here and lock it up.

把車停在這里鎖好。

2、common

常見的;普遍的

His name was Hansen, a common name in Norway.

他的名字叫漢森，在挪威是一個常見的名字。

Oil pollution is the commonest cause of death for seabirds.

石油污染是造成海鳥死亡最常見的原因。

共有的;共同的

Moldavians and Romanians share a common language.

摩爾達維亞人和羅馬尼亞人使用同一種語言。

Such behaviour is common to all young people.

這種行為在年輕人中司空見慣。