Nonreversing
不換向(的), 單向的, 不可逆(的)
??? 情景例句
I should be finished packing by then.
到那時候我應該已經整理好行李了。
In for a penny, in for a pound.
一不做，二不休。
You will find that people will help you if you are ready to help them.
你會發現，如果你樂于幫助別人，別人也會幫助你。