Our mouths and tongues have taste buds, which are receptors for the five basic flavors: sweet, salty, sour, bitter, and umami, or what is more commonly referred to as savory.

我们的嘴巴和舌头上都有味蕾。味蕾是五种基本味道的感受器：甜、咸、酸、苦和鲜味，也就是通常所说的咸味。

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They evolved to recognise only a few basic tastes in order to quickly identify toxins, which in nature are often quite bitter or acidly sour.

它们进化到能够识别出几种基本的味道，以便快速辨别毒素，而毒素在自然界中通常是很苦或很酸的。

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The basic operating requirements of sour water stripping tower are presented through analyzing the properties of solutions containing volatile weak electrolytes, such as ammonia and hydrogen sulfide.

从含硫酸性污水汽提法的原理着手，分析得到了汽提塔的基本操作条件。

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Other airlines have been increasing their use of umami, which is one of the five basic tastes discovered by the Japanese (together with sweet, sour, bitter and salty).

BBC: A possible end to plane food