Invalidation
n. 无效, 失效\\n[法] 无效, 作废
✅ 同义词
🔴 反义词
🗣️ 情景例句
She took a medical course.
她选读医学课程。
I'm studying upstairs.
我在楼上读书。
As there were not enough lifeboats for everybody, 1,500 lives were lost.
由于没有足够的救生艇运载所有乘客，结果，1，500 人丧生。