Allochthon
移置体; 外来体; 外来岩块
🗣️ 情景例句
Congratulations!
恭喜你们！
What kind of quality control do you have?
你们用什么办法来控制质量呢？
Thank you .It was very nice of you to help me.
谢谢你帮我，你真好。