It is used to store electricity, start and provide electricity for clock, radio and CD player and other accessary devices when the engine is closed.

它用来储存电，用于启动以及在发动机关闭时为钟、收音机和CD播放机等辅助装置供电。

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It is doubtful if we can get the engine working before 7 o 'clock.

我们七点之前能否使发动机正常运转值得怀疑。

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At a council meeting on Wednesday the Fire Authority agreed a proposal for round-the-clock cover using a smaller fire engine and fewer crew.

BBC: Windsor fire station 24-hour cover proposal agreed

Gilliam put in several round-the-clock days to patch together the search engine.

FORBES: The Eparty's Over

It was three o'clock in the morning when Graham fired up the engine, and as the frost glistened on the young fruit, the giant rotor began to turn.

BBC: Graham Hewitt and his wind machine