Pericenter
近心点; 近中心点
🗣️ 情景例句
Yes, I'm serious.
是的，我是真心的。
My sister was born in nineteen thirty-eight.
我的妹妹是一九三八年出生的。
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries
比如，很多公司向图书馆借阅科技书籍时感到很困难，