The end customer should give the seller all necessary background information about the trouble appearance, and make some tests according to the instructions of the seller's engineer.

最终用户应提供设备故障出现前后的背景情况供卖方分析，并在卖方技术工程师的指导下进行力所能及的测试；

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On a General Motors test track in Warren, Michigan an engineer sitting in the passenger seat of a black Cadillac CTS gives a reporter the following instructions: Step on the gas and drive 30mph toward another CTS parked in the same lane.

FORBES: Car Talk

On a general motors test track in Warren, Mich. an engineer sitting in the passenger seat of a black Cadillac CTS gives a reporter the following instructions: Step on the gas and drive 30mph toward another CTS parked in the same lane.

FORBES: Magazine Article