We have a parabola going downwards in one direction, and upwards in the other one.

我们得到一条在一个方向上向下，而在另一个方向上向上的抛物线。

youdao

At that time our relations were going upwards, but since then they have been going downwards [downhill].

那时我们的关系是走上坡路，此后就开始走下坡路了。

《新英汉大辞典》

Now I'm going to put you in an elevator and I'm going to accelerate you upwards and you're standing on your bathroom scale.

要是在电梯里称,电梯有向上的加速度,而我还是站在秤上。

youdao

"We've been going upwards for seven years since the old Telford went bust, but we can't be complacent, " chairman Lee Carter told BBC Radio Shropshire.

BBC: AFC Telford prepare plans for Football League status

Given that public sector costs and prices tend to spiral upwards, we are going to be hearing a lot more about "efficiency" - how to make the money go much further.

BBC: Analysis: Combination of cuts could be explosive

The combined thrust from its two engines - at least 50, 000 lb (22, 680 kg) - is more than its weight with fuel and weapons - so it can accelerate even when going straight upwards.

BBC: News | In Depth | Military Fact Files