Ambulating
v. 走动( ambulate的现在分词 )
🗣️ 情景例句
The old library building on Chestnut Street,
Chestnut街老图书馆，
Who called a while ago?
刚才谁在打电话？
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？