What we see is rarely the visible part of the large arterial network.

这个庞大交通动脉可以看到的部分并不多。

Do a slight backcomb at the crown to conceal the more visible part of the unwashed hair.

在头顶稍稍向后梳一下，遮住没洗过的头发中比较显眼的部分。

It emitted almost no light in the visible part of the spectrum, and rocketed up in the infrared.

它在光谱的可见部分几乎不发射任何光，而在红外部分则迅速上升。

The most visible part of the Belt and Road so far has been infrastructure.

迄今为止，“一带一路” 最引人注目的部分是基础设施。

Fluorescence means their bodies absorb ultraviolet light and reradiate it in the visible part of the spectrum.

荧光意味着它们的身体吸收紫外线， 并在光谱的可见部分重新辐射。

The crown is the visible part of the tooth that protrudes from the gingiva, and it's covered in enamel, which has such a high mineral content that it's the hardest substance in the human body.

牙冠是牙齿突出牙龈，可以被直视的部分，它被牙釉质覆盖；牙釉质的矿物质含量极高，是人体最坚硬的组织。

The light the Universe emitted at the time would've been like a star, in the visible part of the electromagnetic spectrum, but the light that reaches us billions of years later — now — should be redshifted into microwave wavelengths.

在电磁波谱的可见部分，宇宙当时发出的光就像一颗恒星，但数十亿年后到达我们这里的光——现在——应该被红移为微波波长。