Fed up with increasing rates, customers, notably chemical, coal, and agribusiness companies, are complaining that these are evidence that the railroads are abusing their market power.
客户们,特别是化工,煤炭和农业公司,已经受够了价格的上涨,他们抱怨道:这就是铁路部门正在滥用其市场权力的证据。
Butt air is now being polluted by modern transportation, notably gas-powered automobiles, as well as electrical generators that burn fossil fuels and pour polluting chemical waste into the air.
但是,现在的空气污染正受到现代交通运输业的污染,尤其是天然气汽车,以及燃烧矿物燃料的发电机,把污染的化学废物倾倒在空气中。
Catalyst: Any substance of which a small proportion notably affects the reaction rate of a chemical reaction without itself being changed or consumed.
酶:在活性生物体中起催化剂作用的物质,它调节化学反应中的反应速率而自身不被改变。
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