Formol
甲醛
🗣️ 情景例句
Oh yes.
你好。
The building of the new road has been held up by bad weather.
这条新马路的修筑因天气恶劣而受阻。
It has been found that certain bats emit squeaks and by receiving the echoes,
人们发现，某些蝙蝠能发出尖叫声，