| 摘要 |
roller skate that is easy to attach and detach in accordance to this invention can be used by adjusting its size according to the size of user's shoes. Moreover, it can be carried around easily due to its small size. Control is facilitated since wheel exists only at the back axis. Men and women, and old and young can use it easily, and there shall be various effects such as its ability to prevent safety related accident.
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