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。

Sure the garden of channels are not any path to your door straight, because this is like a door direct to the pen of arrows.

确定花园中任何的小径通道都不是笔直地通往你家大门，因为这就像是支朝家门笔直射来的箭。