自主访问控制 Discretionary Access Control ; DAC ; discretionary policies ; DAC-discretionary Access Control
自反访问表 Reflexive-ACL
自由访问控制列表 discretionary access control list
亲自访问 a personal call
自动访问系统 automatic addressing system ; AAS
自主访问控制列表 Discretionary access control list ; DACL
自主访问控制模型 DAC Model ; Discretionary Access Control Model
自由访问控制 Discretionary Access Control ; DAC
自我访谈 Self-Q
这可能意味着英国未来可能会接受教皇更多的访问：自1964年(梵蒂冈从这一年开始系统的记录这类访问)以来，该国受访次数的名次排在较后的位置。
This may mean Britain receives more visits from popes in the future: the country is low on the list of countries visited since 1964, when the Vatican began counting such trips systematically.
NASA目前的探险计划要求宇航员在2020年重返月球，这将是自1972以来的第一次访月。
NASA's current exploration plans call for a return of astronauts to the Moon by 2020, for the first visit since 1972.
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