戒严的英文：
enforce a restriction
rope off an area

So we had to quell the turmoil by imposing martial law.
这次我们采用戒严的方式解决了动乱问题，这是非常必要的。

The Square is under martial law, no car can go over.
广场戒严了，不准通车。

The black population is defying curfew and repression.
黑人居民正在反抗戒严和镇压。

After the explosion, police clamped down and let no more visitors inside the monument.
爆炸之后,警察实行戒严,纪念馆里禁止参观者入内。

We cannot tolerate turmoil, and whenever it arises in future we shall impose martial law.
我们不能容忍动乱。以后遇到动乱的事，我们还要戒严。

The time during which troops carry out marshal law missions or handle emergency violence is considered wartime.
部队执行戒严任务或者处置突发性暴力事件时，以战时论

The police department enforces the law.
警察部门执行法律。

He enforced high standards.
他坚持高标准。

Place, impose,enforce,etc a restriction
实行限制

A restriction against smoking in schools.
禁止在学校吸烟。

Restricted access, development,potential
受限制的接触、发展、潜力

One that restricts or modifies another; a qualification.
资格限制或改变其它事件的事件；限定条件

Loop the tree with a rope = loop a rope around the tree
将绳子卷绕于树

She bought a rope of onions.
她买了一串洋葱。

Stretch the rope tight, please.
请把绳子拉紧。