640的英文怎么写

　　After forty years in the police force nothing much shocks me

　　在警队呆了40年后，我对什么都见怪不怪了。

　　I was forty, the age when people take stock and change their lives.

　　我已年届不惑，到了该全面审视自己并改变生活的年龄了。

　　Two-way trade between the two countries increased by more than forty per cent last year

　　去年，两国间的双向贸易增长了40%多。

　　Now I can look back on the whole tragedy from a distance of forty years.

　　时隔40年后，现在我可以回顾整个悲剧了。

　　Forty per cent of the population is suffering from malnutrition

　　人口中有40%的人营养不良。