g-force

humans are not evolved to deal with a negative g-force.

人类还没有进化到能适应反向重力（negativeGforce）的阶段。

Researchers installed computer and camera equipment on the cars of 42 newly licensed drivers to measure what they called "elevated g-force events," like quick turns and jamming on the brakes.

研究人员给42个司机新手的车辆安装了电脑和录像设备，以对他们所谓的“重力加速度事件”（例如：快速转弯和刹车干扰时）现象进行观测。

The couple exchanged wedding vows and rings-with some difficulty-and fumbled their kiss while flying weightless inside the padded fuselage of a specially modified Boeing 727-200 aircraft, G-Force One, operated by ZERO-G, a company offering weightless flight experiences.

这对夫妇在经过特殊改造过的波音727-200飞机“重力一号”里，在无重状态下交换了婚礼的誓言和戒指（这可不容易），并摸索着亲吻。婚礼仪式由零重力公司操办，该公司提供无重力飞行体验。