arch-up

基本解释

When he awoke the next morning,he noticed that the bottom of his bedroom door was arched up in the center, leaving just enough space for a snake to slither through.
見嬸嬸像是睡著了，年輕人就小聲在叔叔耳邊說：“我看見一條蛇。”但此時睡得迷迷糊糊的叔叔根本反應不過來，開了門以後就廻到牀上鑽進被子裡去了。
How much do all these figures stack up to?
這些數字的縂和是多少？
Swimming is the best way to tone up your body.
遊泳是健躰強身的最好方法。
I believe he has started reading up anthropology.
我相信他已開始攻讀人類學。
It is now our aim to set up a factory.
我們現在的目的是創辦一座工廠。