Runners in a relay race pass a stick in one direction.
接力赛的选手向一个方向传递接力棒。
The tubes were attached to a long stick which helped keep the rocket moving in a straight direction.
竹管被捆在一根长长的棍子上,可以让火箭保持平直方向行进。
A fine stick of gradual decrease in cross-section is supported by a fulcrum and keeps its balance in the horizontal direction.
截面渐减细棒由一支点支撑,在水平方向上保持平衡。
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