From time to time we all get a hankering for something a little different...
我们每个人偶尔都会渴望有点变化。
Yet researchers still don 't fully understand the biological and behavioral mechanisms behind these hankerings .
然而,研究者们仍然不了解这些奇特口味背后的生物学和行为学原理。
You can 't just walk out on the results of your own hankerings .
你不能只想着你的渴望就能有结果。