Also, the filing cabinet-- that sounds like a minor thing-- was invented in the 1890s.
还有档案橱柜-,听起来很微不足道-,是在19世纪九十年代发明的。
I don't know what percent; our oil reserves in the U.S. are pretty small, so we're kind of lying somewhere inside-- maybe on this pink line.
我不知道具体占百分之几;,美国的石油储备量是微不足道的,所以我们可能是位于这附近-,也许在这条粉线上面。
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