Tip: Position a portrait subject near a large, bright window that does not receive direct sunlight. It makes for a no-cost softbox— no studio equipment necessary.

小提示：将人像主体安排在一扇不受阳光直射且大而亮的窗户边，窗户可以起到柔光箱的效果，不再需要影室专用设备。

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No equipment is necessary. You can figure out your BMI at home with a calculator.

不须专门的设备，你可以在家用一个计算器算出你自己的BMI。

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RLVs will not discard any equipment after being launched, it is no longer necessary to send them up from coastal sites.

ECONOMIST: The space industry

No facilities are available en-route and hikers must carry all necessary equipment, medical kits, food and water.

BBC: Hiking Namibia��s Fish River Canyon

The cost of technology has been the overriding factor in the delay of rolling out DRS, with home cricket boards reluctant to cover the expensive costs of hiring the necessary equipment, while host broadcasters insist they are under no obligation to provide the service for free.

BBC: Umpire review system agreed for 2011 Cricket World Cup