联合国大会将于明年9月在一次高级别会议上讨论非传染性疾病问题，我相信大家都欢迎这一消息。

I believe we all welcome the news that the UN General Assembly will be addressing noncommunicable diseases in a high-level meeting in September of next year.

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大家好！欢迎来到“进行时英语课堂”，今天我们讨论英语学习中最常问到的三个问题。

Hello everyone! Welcome to ing English Class. Today we talk about three most-often-asked questions concerning English study.

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还有许多其他问题可以探讨，欢迎大家参与本周日的讨论。

There are many other questions to talk about, we welcome you join our discussion on Sunday.

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Great, well welcome, today we're going to continue talking about vaccines.

欢迎大家,今天我们将继续讨论疫苗

耶鲁公开课 - 生物医学工程探索课程节选