Isolysin
同种溶素, 同族溶素
🗣️ 情景例句
2,3,4 ... now switch. ... 2 3 4
……现在 左右交替……
Thank you for inviting me to speak at the dinner.
谢谢你邀请我共进晚餐。
There were six million visitors in all,
参观的人数总共是600万。