The black shade refers to acidentical amino acids, the gray shade denotes amino acids with partial identity.

黑色阴影代表完全相同的氨基酸，灰色阴影表示部分相同的氨基酸。

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We emerged from the shade of the lake fringe and crossed some low, gray sand dunes. Soon an Afar boy and girl came with their herd of goats to investigate.

当我们从湖边的阴影处现身出来，穿越了一片低矮的灰色沙丘以后，首先迎接我们是一位阿法尔男孩和一位阿法尔女孩以及他们放牧的一群山羊。

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For the most part, downtown Dar was built long ago, and its low-slung concrete buildings, long exposed to the moisture of the tropics, have taken on a musty shade of gray.

达累斯萨拉姆市中心的大部分建筑年事已久，低矮的混凝土建筑物长期暴露在热带的湿气中，呈现出灰暗的发霉阴影。

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While the financial services industry is mostly black and white, the American investor is a varying shade of gray.

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The Amazon logo is still subtly printed on the back, a dark shade of gray stamped atop the darker exterior.

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Automotive News interviewed dealers who complained that auto company inspectors have tried to dictate what kind of toilet paper goes into dealership bathrooms and nit-pick which shade of gray should be used on the floor tiles.

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