Contravalid
反有效的, 无效的
🗣️ 情景例句
He goes to high school.
他在上高中。
I'm afraid the crash was because of your fault.
抱歉，我怕这次坠毁是你弄砸的缘故。
Your English is improving little by little.
你的英语正在渐渐提高。