Thioformaldehyde
硫甲醛, 三聚甲硫醛
🗣️ 情景例句
Please don't worry.
请别担心。
This is my second trip to the United States, and I really enjoy staying here.
这是我第二次美国之行，我很喜欢这里。
I am so sorry about this.
对此我非常抱歉（遗憾）。