Porosint
多孔材料
🗣️ 情景例句
Oh, I'm glad that's over.
噢 我真高兴终于结束了。
I have so much to do after I retire.
我在退休后有许多事要做。
I have just received a letter from my brother, Tim.
我刚刚收到弟弟蒂姆的来信，