Metaacetaldehyde
三聚乙醛
🗣️ 情景例句
Unmarried women should be addressed as 'Miss'.
未婚的女性应该被称作 'Miss' 。
There is no longer any communication between them.
他们之间好久不说话了。
He usually takes a short walk in the evenings and is always home by seven o'clock.
傍晚常常出去溜达一会儿，并且总是在7点钟以前回来。