No explicit permission from ATC to enter is needed, although the pilot must continue to obey all regulations governing VFR flight.
尽管飞行员必须继续遵守有关视觉飞行规则的所有规定，但无需获得空中交通管制的明确进入许可。
On a clear day, a pilot in controlled airspace can choose a VFR or IFR flight plan, and the FAA regulations were devised in a way which accommodates both VFR and IFR operations in the same airspace.
在晴天，在管制空域内的飞行员可以选择目视飞行规则或者仪表飞行规则的飞行计划，而且联邦航空局的条例是以这样一种方式设计的：在同一空域同时适用目视飞行规则和仪表飞行规则的操作。
It indicates that fighter pilots acquire information mostly from the OV in VFR (visual flight rules) condition and most of their visual attention is allocated to the outside world.
表明视觉飞行规则下，战斗机驾驶员主要从外景获取视觉信息，他们的大部分注意力都集中在外景。
VFR night flight and IFR flight under visual conditions are also said to be possible.
VFR夜间飞行和IFR目视条件下飞行同样也是许可的。
VFR night flight and IFR flight under visual conditions are also said to be possible.
VFR夜间飞行和IFR目视条件下飞行同样也是许可的。
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