Defease
vt. 使作废，废除(合同、契约等)：
🗣️ 情景例句
And I have to discuss it with my wife.
我必须跟我的太太讨论。
He has graciously consented to speak to us on that subject tonight.
他同意今晚他将就这一专题演讲。
The real dividing line between continents and oceans occurs at the foot of a steeper slope.
大陆和海洋的真正分界线是在陡坡脚大陆架慢坡