spar
/spɑ:(r); spɑr/ n
strong wooden or metal pole used as a mast, yard, boom, etc on a ship 圆材（木质或金属质, 用作桅杆、 帆桁等）.
spar / spɑ:(r); spɑr/ v (-rr-) [I, Ipr]
~ (with sb)
1 box (sb) using light blows, usu for practice only 用拳轻击（某人）（通常仅作拳击练习）.
2 argue or dispute (with sb), usu in a friendly way （与某人）争辩（通常指善意）
children sparring with each other 争吵著的孩子.