spring U-bolt
基本释义
弹簧骑马螺栓
实用场景例句
体育讨论
The boxers sparred intensely before the main event.
拳击手在主要赛事前进行了激烈的练习赛。
军事训练
Soldiers sparred regularly to improve their combat skills.
士兵们定期练习格斗以提高战斗技能。
训练演讲
Spar sessions are essential for athletes to develop their reflexes.
练习赛对于运动员发展反射能力至关重要。
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