You need to do better than that to get the two hundred and fifty dollars.

想要卖到250美元,我们得想个更好的名字

耶鲁公开课 - 博弈论课程节选

There are only two hundred and fifty students in each full time class.

全日制的学生仅有250人。

康奈尔的教授不一样 - SpeakingMax英语口语达人

If some group, let's say you have cholesterol of two hundred and your relative risk is established at one, and then if you have cholesterol two fifty your relative risk is two, that means you have twice the risk, so relative risk of two is twice the risk, three is three times the risk, etc.

比如说有一个组,胆固醇水平200,相对风险设为1,另一个组胆固醇水平是250,相对风险是2,即第二组的相对风险是参照组的两倍,相对风险是2代表两倍风险,3代表三倍风险,如此类推

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选