22 年前
视频简介
抗生素是抑制细菌生长或杀死细菌的药物类别。抗生素拯救了亿万人的生命，但滥用抗生素也将造成危险后果。Angela Rippon讲述抗生素的历史和应用，以及科学家寻找替代药物的努力。。1 "South Island" July 18, 2011 Bear Grylls must fling himself out of a plane and parachute to safety to reach this remote area. Crossing the country's highest mountain range and starting a fire in a waterlogged forest are just some of the unpredictable things he faces in this terrain. 2 "Fire And Ice" July 25, 2011 Bear Grylls is dropped on an ice cap covering an active volcano...。
标签
血腥
儿童历险
益智
