Looking through the mist, I could make out the figure of a woman standing under the street lamp.

透过薄雾，我能看到路灯下站着一个女人的身影。

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The night was very dark. Nevertheless, she saw a figure gazing at her through the window; a lamp lighted up this apparition.

她睁开眼睛，夜晚一片漆黑，这时她看见一张脸孔在窗口望着她，有一盏灯照着那个人影。

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So we can figure out the energy of each photon emitted by our UV lamp by saying e is equal to h c over wavelength.

所以我们可以计算出,每个从紫外光源射出的光子,也就是e等于h乘以c除以波长。

麻省理工公开课 - 化学原理课程节选