| 单词 | free safety |
| 释义 | free safetyBrE /ˌfriː ˈseɪfti/ NAmE /ˌfriː ˈseɪfti/ noun (in American football美式足球) a defending player who can try to stop any attacking player rather than one particular attacking player 游卫，自由后卫（没有特定防守对象） |
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