out of the blue

Indivisual developper from an IT company.
out of the blue์˜ ์•ฑ ๋”๋ณด๊ธฐ

์ถ”๊ฐ€ ์ •๋ณด

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๋ถ€์ ์ ˆํ•œ ์•ฑ์œผ๋กœ ์‹ ๊ณ