Demarcating
v. 定…的界线, 区分( demarcate的现在分词 )
🗣️ 情景例句
Subway transportation is very advanced in Longdon.
伦敦地地铁非常先进。
Speech is silver,silence is gold.
言语是银，沉默是金。
The eraser goes from one student to another first one way, then another.
橡皮擦从一个学生传给另一个学生－先从这个方向传过去，然后返回来。