knuckleball
n. 指关节球,蝴蝶球(投手投出的不旋转球)
n.[棒](投手投出的)不旋转球
anthropic glomerulate petrolic pronouncement subsidiary unfilial upstretched下载迅蛙App
n. 指关节球,蝴蝶球(投手投出的不旋转球)
n.[棒](投手投出的)不旋转球
anthropic glomerulate petrolic pronouncement subsidiary unfilial upstretched