The video owner has disabled playback on external websites.
This video is no longer available on YouTube.
This video cannot be played right now.
Watch on YouTube
WHO: Preventing disease through healthy environments
学习统计
CEFR 等级
难度
评论 (0)
登录后评论互动模式
测验
正确答案:
相关视频
Learn English with Movies | Speak Real English Like Native Speakers
STAY HUNGRY - The Most Powerful Motivational Speech of 2021 (Ft. Eric Thomas and Marcus Taylor)
Infectious Diseases: A Beginner's Guide to the Basics
Represents our heartbeat:' Native American group discusses importance of drums | To The Point
12 Minutes Of Family Guy Funny Moments
World Health Organization (WHO)
测验
正确答案:
观看视频时会出现测验
记忆技巧
来自此视频
免费开始学语言