Subtitles section Play video Print subtitles We would be incredibly grateful for a donation. Because it's donations from people like you that support our free and open courses. And it's donations from people like you that will allow us to continue doing what we do, even better, sharing the best of MIT with a global community of learners and educators.
B1 global community support donation grateful sharing global Support OCW Today 2 0 林宜悉 posted on 2020/03/29 More Share Save Report Video vocabulary