单词:dissolved oxygen-free water
单词:dissolved oxygen-free water 相关文章
Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr
[ti:UNIT 4 Look into Science! Lesson 30: Keep the Candle Burning!] [0:00.733]UNIT 4 第四单元 [0:02.636]Look into Science! 走进科学! [0:05.638]Lesson 30: 第30课 [0:06.956]Keep the Candle Burning! 让蜡烛燃烧! [0:09.491]THINK ABOUT IT
UNIT 4 [00:03.08]Lessons 25~32 [00:08.05]Look into Science! [00:11.89]Lesson 25: [00:16.64]Keep the Candle Burning!Science is so interesting! [00:23.72]I'm sure you'll like this experiment! [00:28.68]When you do this experiment,you will learn somethi
This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway