in good order or condition; all right
情况正常的;情况良好的;一切正常的
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everything will be A-OK. 一切都会好的。
in a good manner or way; all right
情况良好;一切正常
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we hit it off A-OK. 我们相处得很好。
" 1960s (originally an astronauts' term): from all systems OK."