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
短视频
Importance of Water | Science For Kids | Grade 2 | Periwinkle
5:41
已浏览 51万 次
Importance of Water | Science For Kids | Grade 2 | Periwinkle
Periwinkle
Properties of Water | Hydrogen Bonding in Water | Biology | Biochemistry
12:37
已浏览 23.6万 次
Properties of Water | Hydrogen Bonding in Water | Biology | Biochemistry
Socratica
Relaxing Water Sounds
Satisfying Slime ASMR Experience Without Talking
0:05
Satisfying Slime ASMR Experience Without Talking
TikTokxxcrazyyy2
已浏览 19.6万 次1 周前
Explore Bunjako Beach: A Coastal Paradise
0:27
Explore Bunjako Beach: A Coastal Paradise
TikTokbunjakobeachofficial
已浏览 43.2万 次1 周前
Rediscovering Sweetly Sleepy ASMR Sounds
2:17
Rediscovering Sweetly Sleepy ASMR Sounds
TikToksweetly_sleepy_asmr
已浏览 73.2万 次1 周前
热门视频
NASA | Earth's Water Cycle
5:53
NASA | Earth's Water Cycle
YouTubeNASA Goddard
已浏览 87.9万 次2012年8月3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
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
Nature Soundscapes
10 HRS of Nighttime Nature Soundscapes (Lake Waves, Cicadas, Crickets) - 8K Enchanting Night
10:00:00
10 HRS of Nighttime Nature Soundscapes (Lake Waves, Cicadas, Crickets) - 8K Enchanting Night
YouTubeNature Soundscapes
已浏览 192.8万 次2020年12月12日
Incredible Jungle Sounds 8K - Exotic Birds Singing in Tropical Rainforest 8 HOURS - Part #1
8:00:00
Incredible Jungle Sounds 8K - Exotic Birds Singing in Tropical Rainforest 8 HOURS - Part #1
YouTubeNature Soundscapes
已浏览 296万 次2020年6月30日
8 HOURS Desert Wind Sounds Blowing Across Sand Dunes - 4K Nature Soundscapes
7:59:46
8 HOURS Desert Wind Sounds Blowing Across Sand Dunes - 4K Nature Soundscapes
YouTubeNature Soundscapes
已浏览 88.3万 次2019年8月20日
NASA | Earth's Water Cycle
5:53
NASA | Earth's Water Cycle
已浏览 87.9万 次2012年8月3日
YouTubeNASA Goddard
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
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
Importance of Water | Science For Kids | Grade 2 | Periwinkle
5:41
Importance of Water | Science For Kids | Grade 2 | Periwinkle
已浏览 51万 次2017年5月1日
YouTubePeriwinkle
Properties of Water | Hydrogen Bonding in Water | Biology | Biochemistry
12:37
Properties of Water | Hydrogen Bonding in Water | Biology | Bioch…
已浏览 23.6万 次2017年6月27日
YouTubeSocratica
Properties of water | Uses of water | Water and its properties | Properties of water for kids |Water
2:26
Properties of water | Uses of water | Water and its properties | Properti…
已浏览 16万 次2021年3月23日
YouTubeEducationalVideos
Bodies of Water: Exploring the Different Water Forms on Earth
1:47
Bodies of Water: Exploring the Different Water Forms on Earth
已浏览 2.8万 次2023年3月15日
YouTubeEarth Conservation
3:18
How We Use Water
已浏览 4.2万 次2023年8月11日
YouTubeNext Generation Science
2:23
The Water Cycle! Science For Kids
已浏览 4.4万 次2024年1月3日
YouTubeNational Science Foundation News
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