All Wednesdays, Fridays, and, in the strictest monasteries, Mondays, are fast days.

斋戒日为所有的星期三和星期五，在最具清规戒律的修道院里，甚至星期一都是斋戒日。

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Subjects ate whatever they wanted on feast days but consumed only calorie-free beverages and sugarless gum on fast days.

参与者在大餐的日子里人们想吃什么吃什么，但在禁食的日子里只消耗没有热量的饮料和无糖口香糖。

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So it wasn't until the 14th century that the Roman church began to constrain this "indulgence", banning it on its all-too-regular fast days.

直到14世纪，罗马天主教会开始约束这种嗜好，宣布在其经常性的斋戒日期间，禁止食用黄油。

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That fast lasted for thirty-six days and almost killed him.

VOA: special.2009.09.06

Formula One cars are way too fast these days to run at racing speeds through gaps no wider than a tennis court.

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Technology platforms move on so fast these days that a delay of a couple of months can near obliterate the window available for success.

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And these reversals take place fast these days.

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