| 释义 |
helium
[英] [ˈhi:lɪəm]
[美] [ˈhiliəm]
[名] 氦
词频排名 16426/55435
学习人数 9490
难度等级 3/10
认知比例 42.45%
例句
The element of helium was first found in the sun.
氦元素最初是在太阳里发现的。
Helium is colourless and has no smell.
氦无色无味。
Helium is a very light gas.
氦是一种很轻的气体。
助记
扩展
hydrogen 氢 helium 氦 lithium 锂 beryllium 铍 boron 硼 carbon 碳 nitrogen 氮 oxygen 氧 fluorine 氟 neon 氖 sodium 钠 magnesium 镁 aluminum 铝 silicon 硅 phosphorus 磷 sulfur 硫 chlorine 氯 argon 氩 potassium 钾 calcium 钙
|