Observation is particularly important where there is no permanent record of activities –discrete observation can reveal whether there is improper access to a restricted area.

对于没有持续性记录的活动来说，实地观察法是一种非常有效的方法。持续的观察可以发现是否有不正确进入受限制区域的行为。

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Access to this area is restricted to military personnel.

只有军事人员可以进入该地区。

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Live broadcast IDs provide access to the area restricted for live broadcast and broadcast transmission.

直播证件通行范围为划定媒体直播、转播区域。

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He recommended access to the area be restricted and that warning signs be erected by the developer.

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