Costless
a. 没有成本的, 不需花钱的
✅ 同义词
🗣️ 情景例句
Where's the bookstore?
书店在哪？
I hope you enjoy the film.
希望您喜欢那个影片。
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。