NATO officials acknowledge that the opaqueness is part of the point.

北约官员承认，这种不透明是问题的一部分。

But she also had to replicate the true properties of blood, like its opaqueness, which is why she added wheatgrass to her formula.

但她还必须复制血液的真实特性，比如它的不透明性，这就是她在配方中添加小麦草的原因。

Now that I looked at him I remembered the peculiarity of his eyes, which came from the black of the iris being as black as that of the pupil and which gave them at once intensity and opaqueness.

现在我看着他， 我想起了他眼睛的奇特之处， 那是因为虹膜的黑色和瞳孔的颜色一样黑， 这使它们既强烈又不透明。