能源危机是一个可以解决的问题——如果我们现在行动的话。
你每花一块钱购买一些实质性的东西,预计在其寿命结束时要支付一块钱的维修、保养或处理费用。
"I wish I could freeze this moment, right here, right now, and live in it forever."
The computer is an interactive medium, the first medium that allows for the representation of processes that can be manipulated by the user.