Instead of a rapid deactivation following sundown, the molecules gradually change from their active to inactive state.

不是在日落后迅速失活，而是分子逐渐从活性状态变为非活性状态。

The active state is called up-state and the inactive state is called down-state. The up-state period is the time when our brain could learn new vocabulary.

这种活跃状态被称为“可用状态”，而不活动状态被称为“不可用状态”。“可用状态”期是我们的大脑可记忆新单词的时期。

And coronary arteries are linked to one another through teeny tiny blood vessels called collateral vessels, which are normally in an inactive state, meaning blood doesn't flow through them.

冠状动脉通过极细小的血管（侧支血管）相互连接，通常它们处于闲置状态，即没有血流通过。

'Just as mercury rises in a thermometer, the rate at which phytochromes revert to their inactive state during the night is a direct measure of temperature, ' says Wigge.

“就像水银在温度计中升高一样，光敏色素在夜间恢复到非活性状态的速度是温度的直接测量值， ”Wigge 说。