Efforts to strengthen math and science education come at a time when 15-year-old U.S.students rank 25th in math literacy and 30th in science literacy -- among the 57 countries participating in the Program for International Student Assessment.

VOA: standard.2010.05.10

On the 30th day, I will give you another 1000 dollars-- you'll have a total of 30000 dollars from me.

在第30天，我再给你一千美元-,你将从我这里一共得到三万美元。

哈佛公开课 - 幸福课课程节选

I think the application deadline was November 1st, it might have been October 30th.

我觉得申请的截止日期是11月1日，或是10月30日。

关于早期入学申请 - SpeakingMax英语口语达人

The Congressional Budget Office warned Friday that the U.S.budget deficit will grow to more than $1.8 trillion for the fiscal year that ends September 30th, and that Mr.Obama's budget plan will lead to $9.3 trillion in deficits over ten years.

VOA: standard.2009.03.21

On the 30th day, I will be getting from you in total, including the first 29 days-- no, rather on the 30th day, I'll be getting from you 5,368,709 dollars and 12 cents.

在第30天，我将从你那里一共得到，包括前29天-,不，在第30天，我将从你那里得到5368709。12美元。

哈佛公开课 - 幸福课课程节选

And it's his 30th birthday. And you're really excited.

这是他的30岁生日。你感到特别兴奋。

Let me 课堂 - SpeakingMax英语口语达人