目前，我的学校正在开展一项活动，其主题是行动改变世界，提倡低碳生活。

Currently, my school is launching an activity whose theme is that actions change the world to advocate the low carbon living.

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在美墨边境，结合美国全国婴儿免疫接种周行动，计划在新墨西哥州拉斯克鲁塞斯开展一项联合活动。

On the US-Mexico border, a joint event is planned in Las Cruces, New Mexico in conjunction with the launch of US National Infant Immunization Week.

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监测是一项正在持续开展的活动。

Monitoring is a continuous on-going activity.

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