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。
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。
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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