'Fall over' means move from a vertical to a horizontal position.

Fall over 形容的“倒下来”是指从垂直位置移动到水平位置。

That's because Mercury is vertical relatively to the plane of its orbit.

这是由于水星极轴垂直于公转平面。

For these works, he altered his usual horizontal format to vertical, to complement the restaurant's features.

在这些作品中，他将通常的水平格式改为垂直格式，以补充餐厅的特色。

So, the rope becomes more vertical to balance out the increasing weight.

因此，绳子变得更加垂直，以平衡增加的重量。

" To tip (tip) over" means for something to go from being vertical to horizontal – that is, for something to, in effect, fall over.

“To tip (tip) over”是指某物从垂直变为水平——也就是说，某物实际上翻倒了。

And this means at the bottom, the tension needs to be almost vertical to support the weight of the kettlebell, which has a lot of weight but not much air resistance.

这意味着在底部，张力需要几乎垂直才能支撑壶铃的重量，它的重量很大，但空气阻力不大。