Chalcolite
铜铀云母
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
We hope they will improve the environment.
我们希望他们把环境改善得更好。
Then I arrived home at six o'clock yesterday evening. He telephoned again.But I didn't answer the phone!
后来，我昨晚6点钟回到家里。他又打来电话，但我没接。