而不良习惯呢，想必是人们在幼年时期养成的东西吧？
Surely bad habits are something that one picks up from a young age?
这些隐喻应该是我们在幼年时期学习并深深刻在我们脑海里的。
Such metaphors would have been learned and hard-wired into the brain at a young age.
小鼠在幼年时期就通过摘除卵巢的形式使它们的雌激素处于极低水平。
The mice had unusually low levels of estrogen because their ovaries were removed at an early age.
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