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They only stimulate and activate our immune system to work, telling it something harmful is coming in.

它们只是刺激并激活我们的免疫系统工作，告诉它有害的东西来了。

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The camera, also acting as a detector that finds trapped people and detects harmful gases, is placed in the robot, which can work in the dark.

摄像头被放置在机器人体内，可以在黑暗中工作，它还可以充当探测器，发现被困人员和检测有害气体。

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After the 2004-2005 lockout, both sides understand how harmful a work stoppage would be to the game.

FORBES: Can The NHL Avoid Another Costly Lockout?

They say it's not just binge drinkers who are susceptible to liver disease: sharing a bottle of wine over dinner or having a couple of drinks after work may be harmful, too if the alcohol consumption is regular enough.

CNN: Love your liver to live longer

This is likely to confirm the prejudices of many here in Britain who believe that providing charity to Africa is a waste of time, and may be harmful to the hugely beneficial work done by many charities who work directly at the point of need.

BBC: Your comments: Addicted to Aid