In the absence of work, a society designed with other ends in mind could yield strikingly different circumstances for the future of labor and leisure.
在没有工作的情况下，一个怀揣着其他宗旨的社会可能会在未来的劳动与休闲方面产生截然不同的情形。
Networks of neurons in the prefrontal cortex generate persistent firing to keep information "in mind" even in the absence of cues from the environment.
前额叶皮层的神经元网络使得神经元持续放电，从而在毫无外界提醒的情况下也能将信息记在脑中。
Absence of mind in chemical experiments may cause a serious accident.
心不在焉地做化学实验会导致重大事故。
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