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esoteric Buddhism; Tantric Buddhism; Vajrayana; secret Buddhist teachings; Mikkyō
密教は神秘的な儀式で知られる。
Esoteric Buddhism is known for its mystical rituals.
密教の修行は体力と精神力の両方を必要とする。
Esoteric Buddhist practice requires both physical and mental strength.
密教の教えは秘密裏に師から弟子へと伝えられてきた。
The teachings of esoteric Buddhism have been passed secretly from master to disciple.