其结果是，第一组孩子们的玩耍总时间(119秒)比第二的(180秒)，第三的(133秒)和第四的(206秒)都少。
The upshot was that children in the first group spent less time playing (119 seconds) than those in the second (180 seconds), the third (133 seconds) or the fourth (206 seconds).
当大脑在间隔不到300毫秒的时间里同时处理两件事情时，大脑对于第二件事情的反应就要慢一些。
Faced with two almost simultaneous tasks less than 300 milliseconds apart, the brain's ability to deal with the second one slows down.
更困难的第二个级别，要求飞行180秒，接着在遍布岩石和陨石坑的模拟月球地形上降落。
The more difficult second level requires a flight of 180 seconds followed by a landing on simulated lunar terrain, complete with rocks and craters.
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