然而他没未提出实际和具体的建议，在说到美国将开始测定其温室气体时，并未进行更加确切地阐述以此来评定有何进步。
But he offered little that was practical or specific, beyond noting that America would start measuring its greenhouse-gas emissions more exactly, to better assess what progress is being made.
说到迅速转向欧元区可能是政客们的玩的把戏，但是实际困难重重。
Talking about a quick move to the euro may be a good gimmick for politicians, but the practical difficulties are huge.
“机会”这个词在“机会成本”这个词组中实际上多余的，因为我们说到使用一个东西的成本时，就是指这个东西价值最高的其它用途的价值。
The word “opportunity” in “opportunity cost” is actually redundant. The cost of using something is already the value of the highest-valued alternative use.
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