He had to master a lot of new information and spend some of his own time in different parts of the country.
彼は多量の新しい情報を覚えたり、地方の色々な場所に行って時間を過ごさなければならなくなった。
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He had to master a lot of new information and spend some of his own time in different parts of the country.
彼は多量の新しい情報を覚えたり、地方の色々な場所に行って時間を過ごさなければならなくなった。