Researchers call these sensory devices olfactory receptors.

研究人员把这些感知工具叫做嗅觉感受器。

Of the human genome's 20,000 or so genes, almost a thousand code for olfactory receptors.

在人类基因组中大约有20000个基因，几乎有1000个嗅觉受体编码。

Inside a rat's nose are up to 1,000 different types of olfactory receptors, whereas humans only have 100 to 200 types.

老鼠的鼻子里有多达 1000 种不同类型的嗅觉感受器，而人类只有 100 到200 种。

By seven months of gestation, the fetus' taste buds are fully developed, and its olfactory receptors, which allow it to smell, are functioning.

妊娠七个月的时候，胎儿的味蕾已经完全发育，嗅觉器官的神经末梢也能工作了。

Food and drinks taste different because pressurized cabins lower blood oxygen levels, which reduces the ability of olfactory receptors (i.e. the ability to smell).

由于密封机舱会降低血氧水平，从而降低嗅觉能力，这会让食物和饮料的味道变得不同。

That's thanks to the sheer number of olfactory receptors they have.

这要归功于它们拥有的大量嗅觉感受器。

Being the eyeball-dependent apes that we are, only about 400 of those olfactory receptor genes are still functional, each of them is specific to certain chemicals.

作为主要依靠视觉的类人猿，我们只有大约400个嗅觉受体基因仍具有用，每一个基因对某些化学物质都有特异性？？。

But it's not like you can't taste anything — it's just that more subtle flavors involve more volatile compounds that are picked up by your olfactory receptors.

但不是说你什么都尝不到——只是更微妙的味道包含了更多的挥发性化合物，这些化合物会被你的嗅觉受体吸收。

With a few million olfactory receptors in our noses, we clearly don't lack the ability to smell well.

我们的鼻子中有几百万个嗅觉感受器，我们显然不缺乏良好的嗅觉能力。

According to Professor Russell Keast, variations in our smell receptor (or olfactory receptor) genes determine what we taste when we eat Coriander.

根据 Russell Keast 教授的说法，我们的气味受体（或嗅觉受体）基因的变异决定了我们吃香菜时的味道。

As you chew your food, air is forced up your nasal passages, so your olfactory receptor cells are registering information at the same time as your taste receptors are, so you're both smelling and tasting simultaneously.

当你咀嚼食物时，空气会进入你的鼻腔，所以你的嗅觉感受器细胞和你的味觉感受器同时记录信息，所以你能同时闻到和尝到味道。

Even at our elephant's young age, her trunk is already 1.5 meters long and contains five times as many olfactory receptors as a human nose, allowing her to smell standing water several kilometers away.

即使在我们大象很小的时候，她的鼻子就已经有 1.5 米长，嗅觉感受器的数量是人类鼻子的五倍，使她能够闻到几公里外的积水。