Mirror neurons are cells that fire both when a monkey performs a certain task and when it observes another individual performing that same task.

镜像神经元是这样一些细胞，它们在猴子执行某项任务，或当猴子在关注另一个个体执行相同任务时会被激活。

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The area of individual defect stopped expanding when it grew to a certain size.

单个缺陷面积增加到一定尺寸后，不再长大。

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When I talk to couples about money, I believe that each individual needs to control a certain level of discretionary spending.

FORBES: Applying Spousonomics To Money Problems