Although some of these nebulas appear like planets on the sky (hence their name), they actually surround stars far outside our Solar System.

虽然这一类星云看起来象是天空中的行星(也因此而得名)，实际上它们所环绕的恒星远在我们太阳系之外。

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Their most distinctive feature, worn only by females, is a piece of dorsal spine that protrudes above their mouths like a fishing pole—hence their name.

只有雌性安康鱼的背部才长有的一根尖刺是雌鱼最大的特征，这根刺在鱼嘴上方伸出，就像一根钓鱼竿---安康鱼由此得名。

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Multidrug resistance (MDR) proteins are best known for helping cancer cells expel anticancer drugs - hence their name - but they also ferry compounds in and out of normal cells.

耐多药(mdr)蛋白最为人知的是有助于癌细胞排出抗癌药物(因而得名)，但是也会输送化合物出入正常的细胞。

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Many surnames, after all, evolved through being used the other way around, and a person's family profession determined their name - hence all those Butchers, Bakers, Smiths and Taylors.

BBC: News - Today - When the name fits the job

Peseros (mini buses that used to charge one peso, hence the name) weave in and out of traffic alarmingly, cutting off anyone in their path in their determination to grab as many riders as possible.

BBC: Cycling the Aztec way