Orthocomplement
[计] 正交补
🗣️ 情景例句
OK, everybody.
好啦 各位。
It's easy to fall into a trap, but hard to get out again.
堕入陷阱易，脱离陷阱难。
The girl 'gave' her mother a free dress once a week!
那姑娘每星期“送”她母亲一件免费的衣服！