Petrotectonics
[复] n.[用作单] [地]岩石构成学
🗣️ 情景例句
You have been working on this for some time, Richard.
你从事这工作已有一段时间了， Richard。
I'm sorry, but I think she's stepped out.
对不起，我想她出去了。
The characters on the paper were white, and the rest of the paper was black.
纸上的汉字呈白色，其余部分成黑色。