This hardly ever happens out of the blue: there are usually warning signs such as noise, vibration or heat.

机器是不可能突然故障的：通常机器在故障前会有告警信号，例如噪音、振动或发热。

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Lauder, who has tested out the jetpack twice, said when you're on the ground and preparing for takeoff, there's a lot of vibration and noise.

Lauder已经测试过这种飞行器两次了，认为当你在地上准备起飞时，飞行器会产生巨大的震动和声响。

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And up on the mountain-ridge boundaries, electronic transmitters will monitor noise, vibration and motion to keep the snowmobilers and the hikers out of each other's way.

在山脉分界线，电子发射器将监控噪音、震动和活动，以确保雪山车族和背包族互不侵犯。

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Its no-contact drive system uses an advanced low-noise motor and geared belt to ensure control over speed while filtering out vibration.

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Montoya said he had returned to the race track from pit row before the accident, after having the crew check out a vibration he was feeling in his car.

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Think of your business as a tuning fork that puts out a unique vibration into the world.

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