1.position n.位置；职位

Can you find our position on this map?
你能在这幅地图上找到我们的位置吗?

2.coincidence n.巧合；一致

What a coincidence!
真是太巧了！

3.epidemic n.流行病；传染病

A flu epidemic raged through the school for weeks.
流感在这所学校里蔓延了几个星期。

4.infect v.传染；感染

The open wound soon became infected.
裸露的伤口很快就受到了感染。

5.figure n.图形；数字

The figure is expressed as a percentage.
那数字是以百分比表示的。