activity形容词：active

adj.(尤指体力上)忙碌的，活跃的;积极的;定期进行的;起作用的

比较级： more active；最高级： most active

例句：

She's very active, considering her age.

就她的年龄来说，她是十分活跃的。

Given his age, he's remarkably active.

考虑到他的年龄，他已是相当活跃的了。

She is still very active, in spite of her advancing years.

她尽管年事渐高，仍然十分活跃。

A back injury prevented active participation in any sports for a while.

背伤曾一度妨碍积极参加任何体育运动。