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метод случайного отбора 强调
一般	method of random selection (WiseSnake); random selection method (Administrative selection method usually doesn't reach illiterate people, but the random selection method gets ten percent of the illiterate. Andrey Truhachev)
数学	haphazard procedure
生物学	randomization
методом случайного отбора
医疗的	at random (WiseSnake)

метод случайного отбора: 2 短语, 1 学科

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