1. 对练：Rules, regulations, and procedures 規範、比賽規則以及程序 | Sparring 對練 | Step-sparring 步距對練

2. 夹条板,保护条：夹套结构 jacket structure | 夹条板,保护条 sparring | 夹头 chuck

3. 舱壁护条：sparring fitted 装配货舱壁护条 | sparring 舱壁护条 | sparring 护条

4. 护条：sparring 舱壁护条 | sparring 护条 | sparring 货舱壁护条

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noun

1. making the motions of attack and defense with the fists and arms
a part of training for a boxer

Synonym: spar

2. an argument in which the participants are trying to gain some advantage