四十五的英文怎么写

　　小学一学时四十五分钟。

　　In primary schools, a class hour has45 minutes ( or a period is45 minutes long).

　　花四十五元获得享受传统文化熏陶的机会（b约翰西蒙）

　　Could afford up to forty-five bucks a throw to wax sentimental over their heritage ( bJohn Simon)

　　对了，大伟，我要开外面那辆Petro Chem油车往西边走，大概四十五分钟的车程吧。

　　Well, Davy, I'm driving that Petro Chem tanker out there and I'm headed west in about forty-five minutes.

　　订购数量达到五百片的.话，RS-5的价格是四十五美元。

　　The price on the RS-five is forty-five U.S.dollars for quantities up to five hundred units.