The forest is disappearing for the extra activity of the human beings.

森林也因过多的人类活动而消失。

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Bosses will benefit, too: The extra activity will boost energy and alertness, and could even spark creativity.

老板也会从中得益：额外的活动能够增加职员的能量和灵活程度，甚至激发灵感。

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The astronaut shouldering the historic task will need the help of another astronaut to put on a 120kg, non-powered spacesuit for the extra vehicular activity.

承担此项历史性任务的航天员要先在另一名航天员的帮助下穿上120公斤的无动力舱外活动航天服。

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"Fat makes extra hormones, which lead to extra cell activity and extra abnormal cell activity, " she said.

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"But you have to remember that the hurricane generates extra activity too, in terms of the clean-up and rebuilding, " he told the BBC.

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But over and above this there is the point that the extra activity of the sporting event is just displacement of activity in either time or space.

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