单词spear-thrower
网络: 投矛器
Better woodworking improved other tools and weapons, making possible the bow and arrow and spear thrower.
更好的木工艺改良了其他的工具和武器，发展出弓箭和投掷用的长矛。
It"s a spear-thrower. You hold one end in your palm, strapped to your fingers.
你以掌心握住杆的一端，手指套进护手。