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?
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?? 更多 R 開頭的單詞

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