On the physiological level, hard swimming workouts release endorphins, natural feel-good compounds whose very name derives from “endogenous” and “morphine.

在生理层次，刻苦的游泳训练过程中会释放出内啡肽，一种会让你感觉很舒服的自然化合物，名称来源于“内源性”与“吗啡”。

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Here's the reality. On a physiological level, your breakfast choices - or lack of them - can set off a cycle of cravings and blood sugar spikes that spells doom for weight control.

现实是这样的：在生理层次上，你选择的早餐——或是干脆不吃早餐——可以导致强烈的进食欲和血糖激增二者之间的循环，这个循环会对体重的控制造成毁灭性影响。

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No glycogen was found in the mutant, providing evidence for the correction of the mutant in physiological level.

在突变株中未检测到糖原的存在，进一步从生理水平上验证了突变株构建的正确性。

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