题目内容
活塞销偏置的目的是防止活塞在换向时，撞击汽缸壁而产生“敲缸”
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-The traffic jam is driving me mad! - _____ Such is often the case on Monday mornings.
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A bicycle is often more _____ than a car in small towns.
If you look at your map, you’ll see the _____ Center at the bottom. Let’s go there to buy the tickets.
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