各负责另一人安全的两人同行制的英文

buddy system

• 各:    every; all; each
• 负责:    be responsible for ...
• 一:    one
• 人:    human being; man; ...
• 安全:    safe; secure; safe ...
• 的:    4次方是 The fourth po ...
• 两:    two
• 同行:    travel together
• 制:    make; manufacture