Oh, I don't think I've seen this combination of colors before.

哦，我想我以前从来都没见过这种颜色组合。

We marked individual birds with a unique combination of color bands, and we collected blood samples from adults and nestlings of these two species.

我们用独特的色带组合标记了个别鸟类，并收集了这两个物种的成年和雏鸟的血液样本。

According to experts, bacon seems to have just the right combination of these chemicals to make for that extra delicious smell, kind of like a combination of colors that happen to mix to make a beautiful shade.

根据专家的说法，培根刚好拥有这些化合物完美的组合才产生了这种极其美味的香气，就像混合了多种颜色，形成美丽的阴影一样。