Placeholder Image

Subtitles section Play video

    Subtitles and vocabulary

    Click the word to look it up Click the word to find further inforamtion about it

    B1 US

    【TED】Charles C. Mann: How will we survive when the population hits 10 billion? (How will we survive when the population hits 10 billion? | Charles C. Mann)

    • 0 0
    Video vocabulary