Astronauts will make a final attempt today to rescue a communications satellite from its useless orbit.

宇航员们今天将做最后一次尝试，把一颗通讯卫星从它无用的轨道上拯救出来。

《柯林斯英汉双解大词典》

Pyongyang declared the six-nation process "useless" earlier this year, in its latest boycott of the talks.

VOA: standard.2009.12.11

Could a nation facing huge trade deficits make its cash cards useless for buying imported products?

CNN: ASIANOW - Asiaweek

Those gaps exist in part because America has urged its allies to avoid useless duplication.

ECONOMIST: The future of the transatlantic alliance

But a tool is useless without its handle, the thing your customers can grasp.

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