The Bore is the diameter of the cylinder. The stroke is the distance the piston travels from BDC (Bottom dead center) to TDC (top dead center). The Bore is always mentioned first.

内径指的是气缸的直径；行程是活塞从下止点运行到上止点的距离。表述时，内径总是写在前面。

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Try and overly lengthen your stroke in open water and you can literally be stopped dead in the gap between your strokes and you will slip to the back of the field despite working hard.

在公开水域试图过分延长划距可能使你在划水间隙中的“死点”停滞。尽管你努力划水，仍然会渐渐落后。

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Teams began to defend him differently, shifting extra infielders to the area between first and second bases to neutralize his dead-pull stroke.

WSJ: Teixeira Knows His Limits