Daltonide
道尔顿体, 定比化合物
🗣️ 情景例句
Someone told me you're the computer expert around here. Weel, I have a question for you...
有人告诉我你在这里是计算机专家，我有个疑难想请教你。。。
I should have studied last night, but I was too tired.
我昨晚应该学习，但是我太累了。
It starts at four thirty, doesn't it?
聚会4：30开始，是吧？