Benzanthacene
[机] 苯并
🗣️ 情景例句
It's my pleasure.
我很愿意效劳。
I ought to write a letter.
我应该写一封信。
An all-night party on New Year's Eve provided me with a good excuse for not carrying out either of these new resolutions on the first day of the year,
新年除夕举办的一次通宵晚会，使我理直气壮地在新年头一天免去了这两项任务。