And that’s only half the battle: Once the waves bounce off any targets, they must pass back through the wall to reach the radar’s receivers — and again, 99 percent don’t make it.
并且这还只是整个进程的一半:一旦电波碰到目标物体反射,它们必须再次穿过墙壁返回雷达的接收器。
You must hit the ball before it reaches its highest point after bounce. You should learn to use short and quick strokes with little backswing.
你必须在球弹起之后到达它的最高点之前击球。你应该学会用小的引拍动作,用短促的爆发力击球。
You must hit the ball before it reaches its highest point after bounce.
你必须在球弹起之后到达它的最高点之前 击球。
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