It is difficult to find such people, but even if you can, it is more difficult to use their time for data modeling rather than performing their standard business duties.
找到这样的人是很困难的，但即使可以，使用他们的时间来进行数据建模也比让他们尽普通业务职责更加困难。
2
The data also revealed that on Mondays after the switch to standardtime-when we gain an hour of sleep-there's no significant differences in sleep or injuries.
数据还显示换回标准时间之后，即我们又多了一小时睡眠时间，周一则没有显著的睡眠或工作伤害方面的不同。
3
Data that are comparable have been generated using the same or similar methods, for similar populations and time periods, using standard definitions.