“倒数”用英语怎么说

议程的倒数第三项the antepenultimate item on the agenda宇宙飞船已开始倒数计时了.The spaceship is already being counted down.正割函数的倒数，称为余割函数。The value of the complement of the secant is called the cosecant....

“倒数”的拼音为：dào shǔ...