While flying at 1,000 ft., he noticed a peculiar noise emanating from the helicopter's rotor.

在1,000英尺高空飞行时，他注意到直升机旋翼发出一种奇怪的噪音。

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The chopper hovered overhead, its massive blades violently churning the air.

直升机在头顶盘旋，巨大的螺旋桨叶片猛烈地搅动着空气。

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A sleek black Porsche abruptly halted near the helicopter.

一辆闪亮的黑色保时捷突然停在了直升机旁边。

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She was involved in the helicopter caper and sentenced to six months in prison.

她参与了直升机一案，并被判入狱六个月。

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The helicopter had to perform an emergency landing due to a mechanical fault.

直升机由于机械故障不得不进行紧急降落。

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The loud noise of a helicopter can break the calm of a peaceful morning.

直升机巨大的噪音能打破一个宁静早晨的平静。

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The Afghan air force used cargo planes and a helicopter to resupply the isolated city.

阿富汗空军动用了运输机和一架直升机向那座孤立的城市运送补给。

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The helicopter righted itself perfectly after an awful mid-air sway.

直升机在经历可怕的空中摇摆后完美地自行恢复了平稳。

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The helicopter will offload the goods onto the dock before they are loaded into the waiting vehicles.

直升机将把货物卸到码头上，然后再装进等候的车辆里。

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The mechanic works diligently to ensure the helicopter remains airworthy.

机修工勤奋工作以确保直升机保持飞行性能。

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The helicopter can zip along at a speed of about 150 kilometres per hour.

该直升机可以以大约每小时150公里的速度快速行进。

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The police helicopter located him with thermal imaging equipment.

警方直升机通过热成像设备定位了他。

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The helicopter made an emergency ditch, leaving a survivor unconscious.

直升机紧急迫降，导致一名幸存者失去意识。

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"The suspect fled but was spotted by the helicopter," announced the officer over the radio.

"嫌疑人逃跑了，但被直升机发现了，"警官通过无线电宣布道。

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Wounded patients needed helicopter transport to access hospitals.

受伤的患者需要直升机运送才能到达医院。

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