Mesodynamics
介子动力学
🗣️ 情景例句
No parking.
禁止停车。
I will if I can.
如果我能，我愿意的。
We should learn the value of money and learn how many hours' work has to be done before we can buy something.
我们应该认识到钱的价值，知道要干多少小时的活，我们才能买某件物品。