activity 
英 [ækˈtɪvɪtɪ]  美 [ækˈtɪvəti] 
n. 活动；活动力；行动；活跃

例句：
We will see an extraordinary level of activity in the market for UK government bonds. 

在英国政府债券的市场上，我们将看到交易活动异常活跃。

Sources said the activity could be an early sign of a military build-up. 

消息来源称，这次活动有可能是军事集结的早期信号。

The council will organize cultural activities. 

委员会将组织文化活动。

You can take part in outdoor activities from canoeing to bird watching. 

你可以参加多项户外活动，如划艇、观鸟等。

leisure activities such as playing board games or watching TV 

棋类游戏或看电视之类的休闲活动