Use of a variety of rail profiles with a range of contact points improves steering and overall ride quality, and thereby reduces noise and vibration.

可采用多种钢轨廓形，使每种廓形与车轮均有一定数量的接触点，可以提高导向性能和总体的车辆运行质量，从而减少噪声和振动。

youdao

They don't just work the sales floor but also throw events, mingle with tourists, ride around in a branded car, and set up online profiles.

WSJ: New Celebrity: the Clerk