adv. 向下地，下降地
词根：downward
adj.
downward 向下的，下降的
adv.
downward 向下
n.
downstroke 下行程；下行冲程；向下的一笔
downswing 下降趋势；向下摆动；衰落
1.That's trying to reach its natural position so it moves downwards.
因为它正在努力到达其自然归属，所以便下落了。
2.She was lying face downwards on the grass.
她俯卧在草地上。
3.shown here as a dashed black line, heading downwards.
此处显示为虚线黑线，标题向下。
4.It's, again, a parabola going downwards.
它同样是，开口向下的一条抛物线。
5.The garden sloped gently downwards to the river.
花园向河边呈缓坡倾斜。
6.It's a parabola pointing downwards, and starting at one.
那是起点在1且开口向下的抛物线。
7.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。