Preimage
逆象, 原象, [数]前象
🗣️ 情景例句
See, it works!
瞧， 真有效！
If he doesn't wake him, I will.
如果他不，我将叫醒他。
She did not even look up when I took my seat beside her.
当我在她身旁坐下来的时候，她甚至连头都没有抬一下。