Ultrapurity
超纯度
🗣️ 情景例句
Uh, are you going to be busy this evening?
今晚忙吗？
How many years have you been playing pingpong?
你打乒乓球多少年了？
Good idea! It's much better than having classes! Can I go, too?
好主意！这比上课好得多！我也可以去吗？