词汇	toss the ball
释义	toss the ball 投球
随便看	flow cones flow configuration Flow conservation Flow Conservation and Data Redundancy flow-conservation law flow constant flow construction flow construction without steps flow contact length flow continuity flow contribution flow control flow-control flow control additive flow control agent flow-control agent flow control algorithm flow control analysis flow control and overload relief valve flow control and shutoff valve flow control bypass valve flow control capacity flow control center flow control device flow control devices