大家在查： jalopy slab floor landing craft 单细胞生物霍利菲尔德詹姆斯布鲁斯 nakedness JohnPrescott 康康 indentations

道栏

道栏

道栏

1

The boy is running at full speed towards the hurdle placed in front of him .

男孩正以全速跑向放在他前面的那道栏。

2

On the Psychological Barrier and Measure in Hurdle Crossing Teaching in Straight Track

对直道栏教学中学生的心理障碍及克服方法的探讨

3

The Reformation of Straight Technique in Barrier Teaching Methods

直道栏技术教法改革研究

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