The rescue helicopter made another sweep over the bay.

　　救援直升機(jī)在海灣上空又搜索了一遍。

　　The helicopters appeared as two black dots on the horizon.

　　直升機(jī)像兩個小黑點(diǎn)出現(xiàn)在地平線上。

　　Stay well away from the helicopter when its blades start to rotate.

　　直升機(jī)的螺旋槳開始轉(zhuǎn)動時，盡量離遠(yuǎn)點(diǎn)兒。

　　A helicopter was scrambled to help rescue three young climbers.

　　直升機(jī)接到命令，緊急起飛前去營救三個登山的年輕人。

　　The helicopter was already fuelled and ready to go.

　　直升機(jī)已加好油，準(zhǔn)備起飛。

　　The helicopter rose into the air.

　　直升機(jī)升上了天空。