Plumbi oxidum
[医] 一氧化铅
🧩 词语组成解析
[医] 铅(82号元素)
🗣️ 情景例句
This is Mr. Wu in Room 415.
我在415房间，姓巫。
To fall to pass the exam
考试落榜
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。