奉命的英文：
act under orders; receive orders

参考例句：

The police had been called in to quell a minor disturbance.
警察奉命出动以平息一场小规模的骚乱。

We were ordered to draw in our claws
我们奉命停止进攻。

He was instructed to sail for New York.
他奉命前往纽约。

The soldier was ordered to keep guard.
那士兵奉命守卫。

The police were called in to break up(ie stop)the fracas.
警察奉命去制止骚乱.

Anti-riot squads were called out to deal with the situation.
防暴队奉命出动以对付这一局势。

She was sent to examine into the matter.
她奉命派去调查那件事情。

The soldiers were ordered out to quell the riot.
士兵们奉命前去平息暴乱。

Have you been instructed when to start?
你是否已奉命何时出发?

The platoon is sent to reconnoitre the village before the attack.
在发动进攻前，这个排奉命侦察该村。

act是什么意思：
n. 行为，行动；法案；法令；一幕，段；装腔作势
v. 行动；扮演；假装；装作；起作用，见效；举动像

This is an act of depressing.
这是使人压抑的行为。

The act of disappointing.
使人失望的行为

We must act, we must act quickly.
我们必须行动，立即行动。

under是什么意思：
prep. 在…下面；少于adv. 在下面
adj. 下面的，较低的

Under the hammer
被拍卖

under the ground;swam under water.
在地下；游到水下

Under water, famine; under snow, bread.
洪水造饥馑，瑞雪兆丰年

orders是什么意思：
n. 为了做某事；顺序；命令；点的饭菜；法院指令；汇票；等待队列；治安，秩序
v. 点菜，订购；命令；有效地安排

To repeat an order
继续订货、再次订购

external ordering
外次序

You have to take orders.
你必须服从命令。