You can use unsuspecting to describe someone who is not at all aware of something that is happening or going to happen.
例句
The co-defendants are charged with selling worthless junk bonds to thousands of unsuspecting depositors.此案的共同被告因向數(shù)千不明真相的存款人出售毫無價(jià)值的垃圾債券而被起訴。...his unsuspecting victim.他的不明真相的受害人
英漢詞典釋義
adj.
不懷疑的,無猜疑的,可信任的
Don’t be an unsuspecting elder.不要做一個(gè)輕信的年長者。Numerous pitfalls await unsuspecting investors.數(shù)不清的陷阱等待毫無戒心的投資者。I think she palmed off the stolen necklace on some unsuspecting old lady.我想她已經(jīng)把偷來的項(xiàng)鏈脫了手給一位沒有防備的老婦人。
英英詞典釋義
Adjective
1. not suspicious;
"deceiving the unsuspecting public"
2. (often followed by `of') not knowing or expecting; not thinking likely;
"an unsuspecting victim""unsuspecting (or unaware) of the fact that I would one day be their leader"