Methanal
n. 〈化〉甲醛
??? 情景例句
What do you do when you are not working?
工作之余你有什么消遣活動？
An idle youth,a needy age.
少壯不努力，老大徒傷悲。
Excuse me. Which is the way to East Park, please?
請問，去東方公園走哪條路？