Sciametry
[天]日月蚀的数学理论
🗣️ 情景例句
The only thing holding us back is our financial situation.
只是财政状况未许可，所以才拖延到现在。
A man alone is either a saint or a devil.
孤身独处的人可以为圣哲，也可为恶魔。
Well,you mustn't play in the road.It's dangerous. A car may hit you.
嗯，你不可以在路上玩球。那是很危险的。汽车会撞着你。