Wherever you go, a minute is 60 seconds, an hour is 60 minutes, a day is 24 hours, and so forth. Well, maybe. But in America, time is more than that. Americans see time as a valuable resource.

你会说，那是一个简单的问题，不管你去那里，一分钟都是60秒，一小时是60分钟，一天是24个小时，以此类推。

youdao

Every resource that is allocated to a free user and every hour in support spent helping a free user come at the cost of a paying user.

FORBES: Why Freemium Isn't Free

SunPower's five-year growth plan will lower the cost of solar power to 12 to 18 cents per kilowatt-hour, positioning solar energy as a key peaking energy resource to meet our growing power demands.

FORBES: Tom Werner