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immediately; at once; instantly
即刻退場を命じられた。
He was ordered to leave immediately.
不祥事が発覚し即刻解雇された。
He was fired on the spot when the misconduct came to light.
非常事態につき即刻全員避難するよう指示が出た。
In the emergency, all staff were instructed to evacuate at once.