They were standing shoulder to shoulder.是什么意思？

They were standing shoulder to shoulder.

他们肩并着肩站着.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

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。

standing

n. 起立，站立，身份，地位，持续时间；adj. 长期有效的，直立的，固定的；v. 站立，坚持不变；

例句
He was standing a bit apart from the rest of us, watching us...
他站在离我们其余人不远的地方，看着我们。

shoulder

n. 肩膀，（衣服的）肩部，山肩，路肩；vt. 担负，承担，肩起，挑起，用肩顶…；

例句
The bags have adjustable shoulder straps...
这些包的肩带可以调整。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。