即使收获之后，某些种类的产品也应该被分开放置。拿苹果为例，它释放乙烯气体，一种植物激素。它能够导致其他食物成熟过快。
Even after harvest, some kinds of produce should be kept apart. Apples, for example, release ethylene gas, a plant hormone. It can cause other foods to ripen too quickly.
就像人类一样，奶牛也为适应生长激素而产生IGF, IGF同时释放到了它们的血液和牛奶中。
Cows, like humans, produce IGF in response to growth hormone and release it into the blood, and the IGF makes its way into their milk.
有一种化学物质被发现在大脑的应激反应中发挥著作用，它被人称为促肾上腺皮质激素释放因子(首字母缩写为“CRF”)。
One chemical found to play a role in the brain's stress response is known by the initials CRF (corticotropin-releasing factor).
有一种化学物质被发现在大脑的应激反应中发挥著作用，它被人称为促肾上腺皮质激素释放因子(首字母缩写为“CRF”)。
One chemical found to play a role in the brain's stress response is known by the initials CRF (corticotropin-releasing factor).
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