Cataloid
胶体二氧化硅
🗣️ 情景例句
and then I asked myself,
然后我问自己，
I ate too much candy. I have a toothache.
我吃了太多的糖果。牙齿在痛哩。
Nice to meet you.My name's Sophie.
很高兴见到你。我的名字叫索菲娅。