You know, when the government was really focused on green energy alternatives to oil.

当时政府专注于石油的绿色能源替代品。

These clean energy alternatives convert sunlight into electricity that can be used to power your electronics.

这些清洁能源替代品将阳光转化为可用于供电的电能你的电子产品。

Doubts about whether the green energy alternative would be financially viable were laid to rest by the falling costs of solar panels.

使用太阳能电板，使得电费降低，消除了人们对绿色能源经济可行性的疑虑。