Surjection
[数]满射
🗣️ 情景例句
He couldn't take time off to come to New York with me.
他走不开 没办法和我一起来纽约。
The moment John saw Mary, he fell head over heels in love with her.
约翰对玛丽一见倾心，给她弄得神魂颠倒了。
Don't try to get up. You shouldn't get up if you're badly hurt.
别起来。受了重伤，你不该起来的。