收兵的英文：
withdraw troops

sound off quarters
鸣鼓收兵|暂停战斗|解除战斗警报

withdrawal symptoms
ph.1. 戒毒过程中产生的病症(诸如盗汗、恶心等等)

to withdraw from a competition; to scratch
退出比赛

But this is seldom the cause for withdrawal from publication.
但是导致停止出版的情况则是很少的。

She is showing signs of withdrawal and depression.
她表现出孤僻与消沉的现象.

The unemployed cannot withdraw their labour — they have no power.
失业者没法罢工——他们没有这种实力。

motorized troops
摩托化的部队

Daylight will reveal the disposition of their troops.
天亮之后，他们军队的部署就要显露出来。

concentrate troops at a strategic point
集中兵力于战略重点

The officer halted his troops.
那个军官命令他的部队停止前进。

A troop of seagulls slept on the water.
一群海鸥栖息在水面上。