七十三的英文：
seventy three

Seventy thousand people will pack the stadium.
将有7万人挤满整个体育场。

For the use of seventy and seventieth see the examples at five and fifth
关於seventy和seventieth的用法见five和fifth词条中的示例

The seventies proved recycling's practicality and worth.
七十年代证实了回收利用的可行性和价值。

Seventy of the 350 naturally occurring isotopes are radioactive.
自然界有350种天然同位素，其中70种有放射性。

When you get to seventy you are not so active as you were at fifty
当你到70岁时就不会像50岁时那样有活力。

three coat,three bake
“三涂三烘” 工艺(反复涂三道漆，烘干三次的施工方法)

fiveteen contains five and three.
15可被5和3除尽。

To draw three feet of water
吃水三尺

It earned three Grammy Awards.
它赢得三项格莱美奖。

None of these three can be excluded.
这三者缺一不可。