An estimated 147 million gallons of gasoline evaporates into the atmosphere in the U.S. every year because of loose, damaged or missing caps on vehicle fuel tanks.

在美国，每年因汽车燃料箱的松动，损坏，或者盖子丢失造成大约14.7亿加仑的汽油挥发到大气层。

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It can be adjusted by the adjusting screw caps located on the head covers of both sides. Loose the locking screws beforehand, then re-tighten them after.

可通过两侧端盖上的调整螺盖来进行，调整前应松开紧定螺钉，调整后拧紧。

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Pump impeller loose, grinding to pump out the bottom end caps.

水泵叶轮松动，磨到水泵出水底端盖。

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There was a burst of shouting from across the street, and the doors of a dark-shingled flat-roofed building opened, letting loose several men, who were jamming caps on their heads and banging lunch buckets against their thighs.

NEWYORKER: Amundsen