deep down We use this expression to say that deep inside ourselves we know or feel something that perhaps we have not admitted to ourselves or others. 我们用这个短语来表达我们内心深处知道或感觉到的一些事情，而这些事情我们可能对自己或他人都没有承认。 A: He was really angry that we didn't get the contract. 对于我们没有签成那份合同，他真的很生气。 B: Yes, but deep down I think he knows it was right to say 'no' to their terms. 是的，但在内心深处，我认为他知道对他们的条件说“不”是正确的。