Their pace quickened as they approached their cars.是什么意思？

Their pace quickened as they approached their cars.

走近自己的车时，他们加快了脚步。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

pace

n. 一步，长度单位，步幅，步调，快步；vt. 踱步，走来走去，步测，调整步调，训练马溜蹄；vi. 踱，溜蹄；prep. 蒙…恩准，怀着对…的敬意；

例句
The team has accustomed itself to the pace of first division rugby...
球队适应了英式橄榄球甲级联赛的节奏。

quickened

v. （使）变快，增速，加快( quicken的过去式和过去分词 )，苏醒，使有生机；

例句
He quickened his step...
他加快了步伐。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

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。

approached

v. 接近，走近，靠近( approach的过去式和过去分词 )，（在性质、数量、质量、情形、时间等方面）近似，接洽，使移近；

例句
When Chappel approached me about the job, my first reaction was of disbelief...
当查普尔为这份工作找我商量时，我的第一反应是不相信。

cars

abbr. cable relay stations 电缆继电器站；n. 汽车( car的名词复数 )，车辆，（火车）车厢，[英国方言]任何有轮的车（如运货马车、农用马车）；

例句
Rolls Royce produces around 1,000 extremely desirable cars a year.
劳斯莱斯公司每年生产约1,000辆非常吸引人的汽车。