在前一种情况下，第一个物体实际上以原来的速度弹回。
In the former case, the first body rebounds with practically its original velocity.
原来这家伙以惊人的速度操作着印刷机，很快他就印出了报纸，标题耸人听闻。
It turns out that the guy operates the printing machine with amazing speed, and soon he is turning out newspapers with shocking headlines.
它正以比丹尼更快的速度一路蜿蜒前进，原来是狼跟了去。
Threading its way more quickly than Danni was able, the Wolf followed.
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