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All of these require wearing skis and using poles for balance and propulsion, with the biathlon requiring a rifle for shooting targets. 所有這些項目都需穿著滑雪板并使用滑雪杖來保持平衡以推動前行，而現(xiàn)代冬季兩項比賽剛需要攜帶步槍射擊目標。