A large trunnion or trunnion support design ensures central position of ball under the highest working pressure. This permits ease of operation.

大枢轴或枢轴板设计，确保球体在高压下具有正确的中心位置，保证阀门良好的操作性能。

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Sometimes the cannon is fixed in position, and other times you have to use the force of firing it to push it into a spot where you can hit the ball.

有时大炮是固定的位置，其他时候你必须使用发射它的力量把它推到一个你可以击中球的点。

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Pump fake: a fake in which a player motions as if he is going to shoot the ball but holds back, hoping his defender will jump out of position.

假动作(pump fake)：可能他看起要投球但是却把球收回来，这样希望他的防守队员可以跳出自己的位置，一种假象。

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The rate and pace of change in the industry is such that it's always kind of a jump ball environment where companies are not able to hang on to a great position for a super long time.

这一行变化的速度,就是这样,总处于一种跳球环境中,公司不能,永远处于不败之地。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

And with the rest of the G20 not in a position to play the kind of hard ball with France and Germany that Chancellor Angela Merkel and President Nicolas Sarkozy played with the Greek prime minister on Wednesday night.

BBC: The great shakedown in Cannes

Head-tracking ensures the position of the player and sends the virtual ball into the right area of the net with each movement.

FORBES: Connect

Mimicking that forced me down into a better fielding position and kept my view of the ball steady from the crack of the bat to the smack of the glove.

WSJ: Pro Ball Baseball Clinic Weekend