When we're engaged in a mental task, any mental task, our brain is constantly looking for cognitive shortcuts to lessen the workload required.

当我们开始进行任何的思维任务的时候，大脑总是不停的在寻找完成这个任务的快捷方式以减轻自己的负担。

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As an added control, Mackey and his team also asked the students to complete a mental task, to make sure that merely paying attention to the picture wasn't confounding his results.

另外一项控制Mackey博士和他的小组也要求被测学生完成一项精神任务，以确保光把精力投入到照片上不会混淆他的结果。

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Don't persist with a task if you feel too much stress because it may harm your mental and physical health.

如果一项任务给你造成了很大压力，不要强行坚持，因为这可能会影响你的身心健康。

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The bill allows school districts to require "mental health first aid" training for school personnel and creates a task force to examine the state's mental health system.

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"Mental arithmetic is a more complex and challenging task, which more than 20% of people struggle with, " the study said.

BBC: Brain stimulation promises 'long-lasting' maths boost

The NRA expressed disappointment with a White House task force meeting Thursday, saying it expected mental health, the "marketing of violence to our kids" and school safety to be major topics.

CNN: STORY HIGHLIGHTS