后撤的英文：
to pull back (an army)
to retreat
参考例句：
Unfortunately, because of the treachery of our dear allies we are forced to retire gradually.
很不幸，由于我们亲爱的盟友叛变，我们不得不逐步后撤。
The few soldiers there withdrew in panic.
驻守在那里的一小只部队仓惶后撤。
Rearguard action (fight between an army in retreat and the enemy )
后卫战斗(后撤的部队与敌军之间的战斗).
After several reverses the enemy was forced to retreat.
几次失败后敌军被迫后撤。
Their troops recoiled before the attack of the enemy.
他们的部队迫于敌人的进攻而后撤。
It is highly modulated, stepping forward and back, and shifting and turning, in the same way a dancer does.
若舞者的步态，前迈后撤，辗转腾挪。
pull是什么意思：
v. 拉；拖；拔；拉伤；划船；赢得；吸引
n. 拉力；拖力；牵引力；拉手；影响力
pulling controller
单晶拉制电子控制器
lateral pulling
横向拉制
Pull over at the side of the road and pull on the handbrake.
车停靠路边，拉紧手刹/拉上手刹。
back是什么意思：
n. 后面，背面，反面；背，背部；靠背；后卫
v. 支持；后退，倒退；背书；下赌注于
adj. 背部的；后面的；过去的；拖欠的.
adv. 以前；向后地；来回地；上溯
Stand back to back!
背靠背站好！
They are on the back of the menu.
它们在菜单背面。
Our seats on the train were back to back.
我们在火车上的坐位是背靠背的。
army是什么意思：
n. 军队；陆军；军团；大群；团体
a standing army
常备军,5. 固定的,不能移动的,6. 【印】(版面)排好后保留的,n.1. 站立[U]2. 站立处[C]3. 身份;地位;名望[U]4. 名次表[P]5. 持续时间[U]
The army policed the conquered city.
军队管制这个被占领的城市。
The general directed the army to attack.
将军指挥军队进攻。
