Calcispongea
钙海绵钢
🗣️ 情景例句
This is Alexandra Pappas, and this is my grandson Robbie,
这是Alexandra Pappas ，这是我孙子Robbie
He works best who knows his trade.
内行的人做他的事一定会做得最好。
He'll return to London the week after next.
再下个星期他将返回伦敦。