这是医学领域中的一次巨大进步。

It was an extraordinary advance in the field of medicine.

youdao

这是我第一次近距离和外国人聊天，也算是种进步吧？

This is my first time to talk with the foreigners, isn't this a progress?

youdao

这是我第一次近距离和外国人聊天，也算是种进步吧？

This is my first time to talk with the foreigners, isn't this a progress?

youdao