Graphostatics
[机] 图解静力学
🗣️ 情景例句
... and I do need some advice on a difficult problem.
……我的确有一个难题要请教你。
Can I get a seat for today's 7:00 a.m. train?
我可以买到今天上午7点的火车座位吗？
No, that's not mine.
不，那不是我的。