Zone: a defensive tactic in which players guard areas of the court, rather than specific men.
区域联防(zone)：球员防守球场的区域，这种防守战术指的不是具体人。
The guard rail plays an im po rtant role of ensuring the vehicle passing through the turnout zone successfully .
护轨对确保车辆顺利通过道岔起着重要的作用。
The guard rail plays an im po rtant role of ensuring the vehicle passing through the turnout zone successfully .
护轨对确保车辆顺利通过道岔起着重要的作用。
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