Except the goalkeeper, the players can pass the ball with only single hand.
除了守门员，其它球员只能单手传球。
Single thrust ball bearing can be subject to the axial load from single direction.
单向推力球轴承可承受单一方向的轴向载荷。
The ball went over the pitcher's head and into center field for a single.
球越过投手头顶，飞向中外场造成一垒打。
The ball went over the pitcher's head and into center field for a single.
球越过投手头顶，飞向中外场造成一垒打。
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