Vector arithmetic
[计] 向量运算
🧩 词语组成解析
🗣️ 情景例句
She took a medical course.
她选读医学课程。
What do you want to be when you grow up?
当你长大后，你想要成为什么吗？
Modern machines can make the copy bigger or smaller, lighter or darker and copy onto both sides of the paper.
代机器可以放大、缩小、制作较亮的或较暗的复印件，也可以在纸的两面复印。