需付费；有偿
先理解核心含义，再看它在真实句子里的用法。
需付费；有偿；需付费；有偿
requiring payment; in exchange for money
The guide is free, but the map is available for a fee.
指南是免费的,但地图需付费获取。
需付费；有偿
requiring payment; in exchange for money
Use for a fee naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Dictionary facts from AI_SUPPLEMENT.