Young children tire quickly.是什么意思？

Young children tire quickly.

幼童一下子就累了。

young

adj. 年幼的，有朝气的，年轻人的，青年的；n. 年轻人，幼小的动物，崽；

例句
...incentives to private landlords to accept young people as tenants.
鼓励私人房东租房给年轻人的措施

children

n. 孩子们(child的复数)，儿童，膝下，孥；

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。

tire

vt. 使…疲惫，使…厌烦；vi. 厌烦，疲劳；n. 车胎，轮胎；

例句
People were beginning to tire in the midday heat.
在正午时分的热浪之中，人们开始感到疲倦。

quickly

adv. 迅速地，立即，马上；

例句
Reaching this agreement so quickly was a great achievement...
如此快速达成这项协定是一大伟绩。