原文：
I have replaced the washer in my 30-year-old bathroom sink three times, each time making certain the washer is the same size and style as the original one. Yet within a short time that faucet starts leaking again. I tried different brands of washers, as well as different shapes, but the same thing happens again. Any idea what else I can do, short of replacing the entire faucet? A--It's likely that the valve seat--the metal seat inside the body of the faucet against which the washer presses when the faucet is shut off--is scored or otherwise damaged. This prevents a watertight seal when the rubber washer presses down on it. The problem can be corrected by smoothing the seat with a valve seat-dressing tool. Sold in hardware stores and plumbing supply outlets, this inexpensive tool will enable you to grind down and polish the internal valve seat to remove any burrs and scratches that are preventing a proper seal. After shutting off the water, completely remove the faucet stem. Then screw the seat-dressing tool down into the faucet body in place of the stem. A few turns on the handle of this tool while pressing down with moderate pressure will dress the seat smooth and ensure a proper seal when the stem is reinstalled in conjunction with a new washer.
原文来自： http://pqasb.pqarchiver.com/chicagotribune/access/26506451.html?dids=26506451:26506451&FMT=ABS&FMTS=ABS:FT&type=current&date=Feb+20%2C+1998&author=Bernard+Gladstone%2C+New+York+Times+Special+Features.&pub=Chicago+Tribune&desc=DRIP%2C+DRIP%2C+DRIP+VALVE+SEAT-DRESSING+TOOL+CAN+CURE+LEAKY+FAUCET&pqatl=google

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译文：平滑与阀座修整工具的席位
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