Vecton
矢量粒子
🗣️ 情景例句
Are you ready to order now, sir?
先生，你准备点菜吗？
They had to cut down a lot of trees to make room for farms.
他们为了为农场增加空间不得不砍倒很多树。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。