Biopolarity
兩[雙]極性
??? 情景例句
I expected something better.
我所期望的比這要好。
A growing youth has a wolf in his belly.
青年成長時，食量大如狼。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墻壁或山腰附近發出的喊聲，就會聽到回聲。