In the book, the two authors point out that most people are expected to maintain peak levels of mental and creative performance for eight hours each day when they realize it simply can't be done.

在这本书中，两位作者指出，大多数人希望每天8小时保持精神和创造性能的最高水平，但他们意识到这根本不能实现。

youdao

We should sleep seven to eight hours a day to maintain adequatesleep.

我们应该睡七到八小时来保持充足的睡眠。

youdao

Forty thousand people in the agricultural industry are finding it very hard to maintain their jobs and eight out of ten families in Gaza are dependent on food aid.

在农业方面工作的4万人发现很难维持他们的工作，而每10个加沙家庭中就有8个要靠食品援助过活。

youdao

The minister said the option to maintain eight forces with enhanced collaboration would not make the necessary savings, but stressed questions over pursuing one of the two other options had to be answered.

BBC: Scottish police force merger plan outlined

The airlines said they would maintain service to all 336 destinations and eventually add flights to some regions, including the Western U.S. They said the combined carrier would maintain its eight hubs and even expand service from those cities.

WSJ: What an American-US Airways Deal Means for Fliers

Option C will maintain the status quo of eight senators elected island wide, 29 deputies in a range of constituency sizes and 12 parish constables.

BBC: Jersey voters urged to register before reform referendum