The General Grant was rigged with three masts, giving a large capacity for sails, and thus materially aiding the steam power.

格兰特将军号装有三个大帆。帆面很宽，有力地协助发动机加快航行速度。

Although powering steam crackers with electricity instead of natural gas is straightforward in principle, it is no cakewalk in practice, given the limited supply of low-carbon electricity.

虽然用电而不是天然气为蒸汽裂解装置提供动力在原则上很简单，但鉴于低碳电力供应有限，这在实践中绝非易事。

The work of domestic progress is done by masses of mechanical power — steam, electric, furnace, or other — which have to be controlled by a score or two of individuals who have shown capacity to manage it.

国内进步的工作是由大量的机械能——蒸汽、电、熔炉或其他——来完成的，这些机械能必须由一两个显示出管理能力的人来控制。