Gas stations stock up on flowers because they know idiots like you are either going to completely forget Valentine's Day or just put off buying a gift until the very last minute.
加油站之所以囤积鲜花是因为他们知道像你一样的白痴不是完全忘了情人节这回事就是不到最后一分钟也不动手买点什么。
What you pay at the pump also has to do with the stock market and competition with other gas stations nearby.
你在加油站所付的钱也跟股票市场和附近其他加油站的竞争有关。
The researchers estimated that emissions of carbon dioxide (CO2), the main greenhouse gas, from today's stock of vehicles, buildings, and power plants would probably drop to zero by 2050.
研究人员们估计，由现存的交通工具，建筑，发电厂排放的主要温室气体二氧化碳将在2050年之前降为零。
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