Biconcavity
n. biconcave的变形
🗣️ 情景例句
and when I'm ready to go back,
而当我准备好要回去时，
Does he go out with the boy whose aunt is an operator?
与他在一起那男孩的姑妈是接线生。
Well, you just need lots of practice. The more you listen to English, the easier it becomes.
噢，你需要大量的练习。英语你听的越多，就越容易听懂。