今年，16.5%的人持不确定的态度，是过去四年来比例最大的一年。
This year, 16.5% said they were not sure, marking the greatest uncertainty over the last four years.
在欧洲，税收占汽油零售价的比例高达五分之四，因此，即使是原油价格发生了相当大的波动，对油品价格的影响也比过去要更轻微。
In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past.
过去的答案是，需要完成两年制的副学士学位或四年制的学士学位课程。
The answer used to be two-year associate's or four-year bachelor's degree programs.
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