At first, visions of the TARDIS and traveling through time come to mind. However, the technology is used to speed up light and slow it down on opposite sides, thereby creating a "gap."

另外一项技术依靠的是通过改变光纤的密度来控制光的速度，在一端把光速加快，在另一端让它慢下来，从而造出一个“缺口”，在这个时间缺口里，你做任何事情都是没法被别人看到的。

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Assured of his qualifications, Mr. Bumble left the building with a light heart, and bright visions of his future promotion: which served to occupy his mind until he reached the shop of the undertaker.

邦布尔先生自信自己能够胜任，喜滋滋地离开了那幢楼房，满脑子装的都是即将得到擢升的一幅幅光彩照人的幻象，一路来到丧事承办人的铺子门前。

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Have the more spacious visual field, and have very comfortable result of the light and sense of visions.

具有较开阔的视野，并具备非常好的采光效果和视觉舒适效果。

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