In this system, human, machine and environment interact and depend on each other determining the overall system performance.
这个系统中，人、机、环境三个要素之间相互作用、相互依存的关系决定着系统总体的性能。
That stated, this issue is actually overshadowed by a large social imperative: That the use of machine labor (mechanization) is provably more efficient than human performance in virtually all sectors.
说明了这点，但这个议题实际上仍被一个巨大的社会急迫性所覆盖：机械劳动(机械化)在所有的部门领域中，实际上皆可证明为比人力表现更有效率。
Some navigation virtual system which can realize virtual roaming had poor performance about human-machine interaction, some even unable to do man-machine interactive operation.
能实现虚拟漫游的系统人机交互性能也很差，有的甚至无法进行人机交互操作。
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