Untreading
折回, 退回( untread的現在分詞 )
??? 情景例句
Practice tenses as much as possible.
操練各種時態。
No. It only goes as far as Main Street, but you can get the Number 31 there.
不去，最遠只到正街。不過你可以到那里再乘31路。
I'm off on Sunday.
星期天動身。