Arrows would continue to fly forward forever in a straight line were it not for gravity, which brings them down to earth.
要不是重力使箭掉落地上，它将会一直沿直线往前飞行。
From the side, the front line is perpendicular and straight, coinciding with the maxillary edge or slightly projected forward.
从侧面看，前行是垂直而直，与上颌骨边缘或稍向前预测相吻合。
In the Western way we think time is going forward in a straight line.
在西方的方式，我们思考时间以直线向前。
Compared with a straight blade, a unique compressor blade integrated forward-swept and positive-curved stacking line is studied experimentally.
与直叶片相比较，对一种具有前掠和正弯积迭线的独特的压气机叶片进行了实验研究。
High stepping and free, front and hind legs to move forward in a straight line.
步伐大，不受拘束，前腿和后腿在同一直线上移动。
Operation: 1, diluted cleaning fluid into the washing machine, the boot operation, from the back forward, walking a straight line, it can avoid the omission.
操作方法：1、将稀释好的清洗液倒入洗地机内，开机操作，从后向前进，按直线行走，这样可避免遗漏。
Operation: 1, diluted cleaning fluid into the washing machine, the boot operation, from the back forward, walking a straight line, it can avoid the omission.
操作方法：1、将稀释好的清洗液倒入洗地机内，开机操作，从后向前进，按直线行走，这样可避免遗漏。
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