Retreating soldiers were dousing homes and shops with petrol and setting them on fire.是什么意思？

Retreating soldiers were dousing homes and shops with petrol and setting them on fire.

撤退的士兵把汽油浇到住宅和商店上，并放火焚烧。

retreating

v. 撤退( retreat的现在分词 )，隐退，离开，规避；

例句
If your ordinary life is out of control, then retreating into a cosy ritual will not improve matters...
如果正常生活都一团糟了，那么再讲究小情调根本无济于事。

soldiers

n. 士兵，军人( soldier的名词复数 )，兵员，士卒；

例句
13 soldiers were killed and 10 wounded in action.
战斗中有13名士兵阵亡，10名士兵受伤。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

dousing

v. 浇水在…上( douse的现在分词 )，熄灯[火]；

例句
The firemen unwrapped their hoses and began dousing the scorched grain silos.
消防员展开水龙带，开始冲着烧焦的谷仓喷水。

homes

n. 家( home的名词复数 )，家庭，家庭生活，终点；

例句
Students are accommodated in homes nearby.
学生被安置在附近的住家中。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

Shops

n. 商店( shop的名词复数 )，工厂，办事处，购物；

例句
Several long-awaited videos will finally arrive in the shops this month...
几部让人翘首企盼的录像片终于将在这个月到货。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

petrol

n. 汽油；

例句
The crowds became violent and threw petrol bombs at the police...
人群变得狂暴起来，并向警察投掷汽油弹。

setting

n. 镶嵌，环境，装置，（某事、戏剧、小说等的）背景；v. 放( set的现在分词)，安插，树立，安排；

例句
They celebrated the event by holding parades, lighting bonfires and setting off fireworks.
他们通过举行游行、生起篝火和燃放烟花来庆祝这一事件。

them

pron. 他们，她们，它们；

例句
I take care of them to the best of my abilities...
我尽我所能地照顾他们。

on

prep. （表示方向）向，（表示对象）对，（表示位置）在…上，（表示时间）在…之时；adv. （放，穿，连接）上，向前，（继续）下去；adj. 活动着的情况，状态，使用着的，发生着的，计划中的；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

fire

n. 火，燃烧物，火灾，射击，发射，热情；vt.& vi. 开火，射击，燃烧，引爆炸药，充满热情；vt. <口>解雇，射（箭），激励，射出（子弹）；

例句
...weapons that could fire with accuracy at targets 3,000 yards away...
能准确无误地击中3,000码以外目标的武器