This text carries on new theoretical thinking to high jump technology by the revelation from the model experiment of little ball and pole vault sports.

从小球模型实验和撑竿跳高运动所得到的启示，来对跳高技术进行新的理论思维。

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A golf club head comprises a ball head main body that is formed by moulding and a pole combining pipe fittings made of nonmetal.

一种高尔夫球杆头，包含浇铸成型的球头主体，以及非金属制的杆结合管件。

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The end head of this ball silk pole is connecting the electrical machinery of urging.

该滚珠丝杆的端头连接着驱动电机。

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They count down the final seconds to midnight as they watch a brightly lit ball slide down a pole on top of a tall building.

VOA: special.2009.12.28

Kemp drove a 2-0 fastball, clocked at 95 mph, toward the right-field corner where a security guard stationed at the foul pole tried to catch the ball just behind the wall.

WSJ: Dodgers blow lead in 9th, lose to Mets 7-3 in 10

At the edge of the yard, two little girls are slapping a bright-yellow ball around a silver pole.

NEWYORKER: Ask Me If I Care

To loosen up before starts, Bauer drifts back toward the right-field foul pole, where after taking a crow-hop, he sends the ball sailing across the grass to a teammate standing within a few feet of the left-field foul pole.

WSJ: Dylan Bundy, Trevor Bauer, Matt Barnes: Throwing Long to Throw Short