Radon emanation
[医] 氡射气
🧩 词语组成解析
radon
['reidɔn]
n. <化>氡（元素符号Rn）;
n. 散发, 发出\\n[化] 射气
🗣️ 情景例句
My hobbies are hiking, fishing and climbing.
我的嗜好是远足、钓鱼和爬山。
What's your plan for the summer holiday?
暑假计划干什么？
My parents want me to go abroad.
我父母想让我出国。