Sima
n. [地]硅镁层
✅ 同义词
🗣️ 情景例句
Can I count on you to help me?
我能仰仗你的协助吗？
I have received a letter from my cousin.
我收到了我表兄的信。
Sure. What are you going to do, Mary?
当然了。你打算做什么，玛丽？