Biquintile
五分之二圆周差
🗣️ 情景例句
You're very lucky to have a caring family.
你很幸运有一个温馨的家庭。
Yes, a lot of friends.
是的，很多。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。