Radiativity
輻射性, 放射性, 發射率, 發射性
??? 情景例句
Hello, my name is ... May I speak to ...?
喂， 我叫……我可以和……講話嗎？
I wrote 9 books.
我寫了九本書。
Good morning. Could I have some bottles of milk, please?
早上好。我想買幾瓶牛奶？