Aethylparabenum
对羟基苯甲酸乙酯
🗣️ 情景例句
I have no time for extra-curricular activities.
我可没时间参加课外活动。
Early mistakes are the seeds of future trouble.
早期的错误可以酿成日后的麻烦。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）