They battled heroically for seven days and nights.是什么意思？

They battled heroically for seven days and nights.

他们英勇地战斗了7昼夜.

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。

battled

v. 与[对]…作战，争斗( battle的过去式和过去分词 )；

例句
Thousands of people battled with police and several were reportedly wounded...
数千人与警方发生冲突，据报道有数人在冲突中受伤。

heroically

adv. 英雄地，超人地，冒险地，庞大地；

例句
Single parents cope heroically in doing the job of two people.
单身父母扮演双亲的角色非常辛苦。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

seven

num. 七，七个，第七；n. 七，七个；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

days

n. 天，时期，一天( day的名词复数 )，白天，时期，工作日；adv. 每天，在白天；

例句
There's lots of money about these days for schemes like this.
近来这类计划资金充足。

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。

nights

adv. 夜间；n. 夜( night的名词复数 )，晚上，（举行盛事的）夜晚，…之夜；

例句
The streets are still full of debris from two nights of rioting.
街道上仍到处可见连续两晚的骚乱留下的残迹。