science_spies
@science_spies
Sun, Aug 18, 2019 9:24 AM
How to Build a Trebuchet | MythBusters - https://sciencespies.com/video/how-to-build-a-trebuchet-mythbusters/

Video | https://sciencespies.com/video/how-to-build-a-trebuchet-mythbusters/ https://imgs.plurk.com/QwA/Naq/HFFGCMHA3tGSYRmGD9raQZpcVzc_lg.jpg
載入新的回覆