空隙，间隙允许自由运动所介入的空间或距离，如在机器零件之间的。
An intervening space or distance allowing free play, as between machine parts.
天堂和地狱只有一线的距离，我象一天使在地狱仰望着天堂，所有全是自由的。
Heaven and hell is a fine line distance, I like the angel in hell I look forward to paradise, all are free of.
空隙，间隙：允许自由运动所介入的空间或距离，如在机器零件之间的。
An intervening space or distance allowing free play, as between machine parts.
自由泳这门学问中有两个学科：长距离泳和短距离泳。
There are two disciplines within freestyle swimming: long distance and sprints.
自由泳这门学问中有两个学科：长距离泳和短距离泳。
There are two disciplines within freestyle swimming: long distance and sprints.
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