先后 (xiān hòu): เร็วหรือสาย

At this conference, Professor Zhang and Dr. Li spoke one after the other, explaining the future of artificial intelligence from theoretical and practical perspectives, respectively.

Last summer, our whole family visited Beijing, Shanghai, and Xi'an one after another, and each city left us with a unique impression.

This dish is not hard to make: first stir-fry the tomatoes until they release juice, then add the eggs and salt one after the other, stir-fry a few times, and it's ready to serve.

In that car accident, he underwent three surgeries one after another before finally saving his legs; he is still persevering with exercises at the rehabilitation center.