It turns out to be-- there's a fairly complicated balance between the time of flight and the range.

答案表明,在飞行时间与射程之间,有着一个相当复杂的平衡关系

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Other one says, maximize the time of flight and you point a cannon like this.

另一种是,让飞行时间最长,像这样进行瞄准

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Then it lands on your foot, because assuming the cannon is at zero height, the cannonball certainly comes out towards the enemy, but has no time of flight.

然后它就会落在你的脚边,因为假设大炮的高度为 0,炮弹笔直地出膛打向敌人,却没有时间飞行

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