蜜芽传媒 Learning English - 蜜芽传媒 Media English “媒体英语”: Blowing bubbles: Soapy spheres pop pollen on fruit trees 科学家吹泡泡受启发：肥皂泡可为果树授粉 - 蜜芽传媒 Sounds
蜜芽传媒 Learning English - 蜜芽传媒 Media English “媒体英语”: Blowing bubbles: Soapy spheres pop pollen on fruit trees 科学家吹泡泡受启发：肥皂泡可为果树授粉 - 蜜芽传媒 Sounds
蜜芽传媒 Media English “媒体英语”: Blowing bubbles: Soapy spheres pop pollen on fruit trees 科学家吹泡泡受启发：肥皂泡可为果树授粉
How does a soap bubble help the process of fertilising fruit trees?
