The other purpose for the mid drive is to step-up the gearing - with the aerodynamic fairing body on, the bike can go very fast with very little power.

其他目的的中期驱动器是逐步的调整-与气动整流罩机构，自行车可以非常快很少权力。

youdao

These are high-output, high efficiency loudspeakers, featuring Wharfedale pro proprietary 12 "drive units and a purpose-built high quality Electro-Dynamic HF driver (with overload protection)."

这些都是高输出，高效率的扬声器，采用乐富豪专业专利12“驱动装置和一个专门设计的高品质电动式高频驱动器(带过载保护)。”

youdao

This article is by Lisa Earle McLeod, a sales leadership consultant and author of Selling With Noble Purpose: How to Drive Revenue and Do Work That Makes You Proud.

FORBES: Purpose-Driven Selling: It Beats Quota-Driven Every Time