Yeah,i can see why you ruled out math.我知道你为什么排除学数学了

rule out消除； 排除； 划线隔开

He did not rule out changing his mind.

他没有排除改变主意的可能性。

Rule out that entry in the ledger, the transaction was cancelled.

那项交易已取消了，请从分类帐上划去那笔帐目。

相关短语out of rule不按常规,违背惯例

It is out of rule for an unmarried woman to chaperon the little child.

由一个未婚妇人充当这小孩的监护是违反常规的。

Look,i've said a lot of things i wish i could take back,but i can't.我说了很多我想收回的话，但这不可能

take back收回； 拿回

I take back what I said just now.

我撤回刚才说的话。

The grocer took back the rancid butter.

杂货店老板拿回了有腐臭油脂味的黄油。