let me see 可以翻译成让我看看吗

let me see 让我想/查一下。
让我看看 Let me have a look

不能，是让我想想的意思

让我看看是let me have a look

depends on different circumstance, the phrase you mentioned can be a little bit rude sometimes, better way of saying what you meant would be "can I take a look?"

可以

let me see 可以是 我看看 也可以是让我想想，
have a look 或者 take a look 比较精准

have a look 或者 take a look
let me see 也可以做意思是让我看看，可是它的意思还有很多，可以看语境来定它的具体意思。