Some of us were confident and eager to take part in the class activity.

我们中的一些人充满信心，渴望参加班级活动。

youdao

The entertainment department of our Student Union organizes an activity in which each class shoots a short movie.

我们学生会的娱乐部组织了一次活动，每个班级要为此拍摄一部短片。

youdao

Some of us were confident and couldn't wait to take part in the class activity; others were nervous.

我们中的一些人很自信，迫不及待地参加班级活动，但别人都很紧张。

youdao

The party opposes his plan to cut taxes for middle class Americans and use of government spending to increase economic activity.

VOA: special.2009.05.02

Members of a newly discovered class of compounds, ampakines, boost the activity of glutamate and thus make it easier to form memories.

ECONOMIST: Cognitive enhancement

The idea is, the casual participation in sports in class sparks an interest that inspires a child to try an activity outside of class.

FORBES: Sporting Goods Stores Profit From Our Breeding

In keeping with previous work, they found that high- and low-rank individuals showed different levels of responsiveness to a class of hormones called glucocorticoids, which regulate immune-system activity and response to stress.

ECONOMIST: Social status and health