Dfl
abbr. deep fiber layer 深纤维层
🗣️ 情景例句
How often do you go running?
你多久跑步锻炼一次？
You have to be on time. Don't be late.
只准早到，不许迟到。
Unfortunately you'll have to pay the fine before you check those books out.
在你借书之前你要先付清罚款。