We know that light is a variety of radiant energy.

The amount of radiant energy needed to expose a photographic film.

感光胶片上曝光所需的辐射能的总量.

Material energy can be transformed into radiant energy only in units of a certain size.

物质能量只能以一定大小的单位转变为辐射能量.

Such a surface would reflect no radiant energy, and hence would appear black in color.

这种表面不会反射辐射能, 因此呈现黑色.

No surface can absorb more than all of the radiant energy which strikes it.

表面所能吸收的能量不可能大于投射到它上面的全部辐射能.

Radiant energy is also called energy.

辐射能也称作光能.

For a fixed set of conditions, any free surface emits radiant energy of varying wavelengths.

在一定的条件下, 任何自由表面均会散发各种波长的辐射能.

We consider radio waves as radiant energy.

我们把无线电波看作是辐射能.

It is not until the radiant energy falls upon matter that it becomes heat energy.

直到幅射能落到物质上以后,它才能变成热能.

The police were swift to act.

警方行动迅速。

The military on the front went swiftly ahead.

前方的军事局势急转直下.

We must value the good time which passes swiftly like flowing water.

我们要十分珍惜这似水流年的好年华.

High above him there's a swallow Winging swiftly through the sky.

在他头顶上方一只燕子振翅高飞,穿越蓝天.

He came in swiftly and placed the child in my arms.

他匆忙走进来把孩子放到我怀里.

Swiftly he adjusted his position, thus saving himself and his ship.

他迅速地调整了航向, 从而救了自己,也救了船.

The boy ran away swiftly.

小男孩一溜烟儿跑了.

The horses were swiftly corralled.

马群被迅速赶进了围栏.

The wheels were turning swiftly.

轮子飞快地转动着.

The proposals were swiftly and unsurprisingly rejected by Western ministers.

一如所料，这些提议当即遭到西方各部长的反对。

They meant to finish her off, swiftly and without mercy.

他们打算毫不留情地迅速结果了她。

Our task is to challenge the UN to make a swift decision...

我们的任务是敦促联合国快速做出决策。