个人资料图片
English
  • 全部
  • 搜索
  • 图片
  • 视频
  • 地图
  • 资讯
  • 更多
    • 购物
    • 航班
    • 旅游
  • 笔记本
报告不当内容
请选择下列任一选项。
  • 时长
    全部短(小于 5 分钟)中(5-20 分钟)长(大于 20 分钟)
  • 日期
    全部过去 24 小时过去一周过去一个月去年
  • 清晰度
    全部低于 360p360p 或更高480p 或更高720p 或更高1080p 或更高
  • 源
    全部
    Dailymotion
    Vimeo
    Metacafe
    Hulu
    VEVO
    Myspace
    MTV
    CBS
    Fox
    CNN
    MSN
  • 价格
    全部免费付费
  • 清除筛选条件
  • 安全搜索:
  • 中等
    严格中等(默认)关闭
筛选器
The Basics of Freshwater: Crash Course Kids 14.1
4:16
YouTubeCrash Course Kids
The Basics of Freshwater: Crash Course Kids 14.1
We have a lot of water on Earth, but we also can't actually drink much of it... or use it for farming. That's because most of the water on Earth is saltwater. We humans, like a lot of living things, need freshwater to survive. In this episode of Crash Course Kids, Sabrina talks about the difference between freshwater and saltwater and why ...
已浏览 103.6万 次2015年6月9日
Water Flow Sensor Installation
Unique Earth: The Essence of Water | Full Documentary
52:00
Unique Earth: The Essence of Water | Full Documentary
YouTubespace and science
已浏览 234.6万 次2022年12月9日
Water Water Everywhere | Learn All About Water For Kids
8:51
Water Water Everywhere | Learn All About Water For Kids
YouTubeLearn Bright
已浏览 49.8万 次2021年11月30日
The Chemistry of Water | Chemistry Basics
2:25
The Chemistry of Water | Chemistry Basics
YouTubeAmerican Chemical Society
已浏览 12.6万 次2018年11月8日
热门视频
Water Resources
11:38
Water Resources
YouTubeBozeman Science
已浏览 48.3万 次2015年9月7日
Water Bodies for Kids | What are the different bodies of water?
8:07
Water Bodies for Kids | What are the different bodies of water?
YouTubeLearn Bright
已浏览 63.2万 次2022年1月25日
The water (hydrologic) cycle
2:16
The water (hydrologic) cycle
YouTubeMooMooMath and Science
已浏览 37.1万 次2018年10月28日
Water Flow Sensor Review
Before-and-after footage shows how an atmospheric river transformed the Los Angeles River, sending water surging through the channel after torrential rain soaked Southern California. | AccuWeather
0:16
Before-and-after footage shows how an atmospheric river transformed the Los Angeles River, sending water surging through the channel after torrential rain soaked Southern California. | AccuWeather
FacebookAccuWeather
已浏览 173.7万 次3 天之前
WATER CYCLE | Biology Animation
6:16
WATER CYCLE | Biology Animation
YouTubeEarthPen
已浏览 6.5万 次2020年9月6日
Where Did Water Come From?
12:09
Where Did Water Come From?
YouTubePBS Eons
已浏览 262.7万 次2022年9月27日
Water Resources
11:38
Water Resources
已浏览 48.3万 次2015年9月7日
YouTubeBozeman Science
Water Bodies for Kids | What are the different bodies of water?
8:07
Water Bodies for Kids | What are the different bodies of water?
已浏览 63.2万 次2022年1月25日
YouTubeLearn Bright
The water (hydrologic) cycle
2:16
The water (hydrologic) cycle
已浏览 37.1万 次2018年10月28日
YouTubeMooMooMath and Science
Unique Earth: The Essence of Water | Full Documentary
52:00
Unique Earth: The Essence of Water | Full Documentary
已浏览 234.6万 次2022年12月9日
YouTubespace and science
Properties of Water | Hydrogen Bonding in Water | Biology | Biochemistry
12:37
Properties of Water | Hydrogen Bonding in Water | Biology | Bioch…
已浏览 24万 次2017年6月27日
YouTubeSocratica
Water Water Everywhere | Learn All About Water For Kids
8:51
Water Water Everywhere | Learn All About Water For Kids
已浏览 49.8万 次2021年11月30日
YouTubeLearn Bright
Why water is necessary in our body | Why do we drink water? | Importance of water | Video for kids
3:35
Why water is necessary in our body | Why do we drink water? | Import…
已浏览 35.3万 次2021年3月24日
YouTubelearning junction
3:18
How We Use Water
已浏览 4.2万 次2023年8月11日
YouTubeNext Generation Science
6:16
WATER CYCLE | Biology Animation
已浏览 6.5万 次2020年9月6日
YouTubeEarthPen
观看更多视频
静态缩略图占位符
更多类似内容
反馈
  • 隐私
  • 条款