Polycalcium
多種鈣
??? 情景例句
Thanks. I'll see you Monday at the office.
謝謝。咱們星期一辦公室再見了。
Let's go to the station to get a train into town.
我們到火車站去乘車進城。
Some types of birds cannot fly.
有些種類的鳥不會飛。