After my son was enrolled in a university, I have a lot of sparetimes. I hope I can do something useful to make use of the time.
在我的儿子进入大学之后,我有很多时间,我希望我能用这些时间做些有用的事情。
3
Customers have no incentive to conserve power when it is scarce during times of peak demand, so generating firms have to build lots of spare capacity to cope with surges in consumption.