"It describes the power needed to propel a bike against our everyday foes: gravity, weight, friction, wind resistance," he writes.

“它描述了推动自行车克服日常阻力——如引力、重量、摩擦力以及风阻——所需要的能量，”他这样写到。

youdao

Normal swells, known technically as gravity waves, are created by wind pushing the surface of the sea up and gravity then pulling it down, causing it to bounce.

一般的波浪，技术上被成为重力波，是由于风推动着海洋表面上升而后又在重力的作用下被拉向下方，这便会导致海水的回弹。

youdao

These waves between Indonesia (top) and the coast of Australia (bottom) aren't caused by wind. They're a direct result of gravity.

在印度尼西亚(顶部)和澳大利亚海岸(底部)之间的这些波不是由风所引起。它们是重力作用的直接结果。

youdao

Encouraged by the wind, it defies gravity and flows up the gentle incline toward the trees.

NPR: Excerpt: 'Woodsburner'

As a telescope moves, its mirrors are deformed by gravity while at the same time being shaken by wind.

FORBES: European Southern Observatory (ESO) Sets 'First Light' For World's Largest Telescope

Like wind and sunlight, the power of gravity is an infinite resource.

FORBES: Gravity May Soon Qualify As Renewable-Energy Resource in New York