Grauwacke
（杂砂岩）灰瓦岩
🗣️ 情景例句
I'm Ellen Stewart, Marilyn's mother-in-law.
我叫Ellen Stewart， Marilyn的婆婆。
Americans are hight mobile, and therefore may find it difficult to became deeply involued with other.
美国人的流动性，大，因此你会发现和他人深交很难。
You can buy whatever you need if you have enough money.
钱多了，你需要什么就可以买什么。