Demarcating
v. 定…的界线, 区分( demarcate的现在分词 )
🗣️ 情景例句
Especially when it comes to speaking in English and fortunately or unfortunately.
特别是要用英文来演讲，不知是幸运还是不幸。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
Come and help!
咱们去帮帮忙吧！