creep (n.)
令人讨厌的人；使人扫兴的人

例句：
The girl giggled¹, " I wouldn't go out with him. He's a creep."
姑娘咯咯地笑着说：“我不跟他出去，他是个讨厌的家伙。”

be all fingers and thumbs
做事笨手笨脚

例句：
She could not undo² the string of the parcel--she was all fingers and thumbs.
她怎么也解不开包袱上的绳子——真是笨手笨脚。

You can't miss it!
你不会找不到的。
也就是：You'll surely find it.

例如：
A: Excuse me. Could you tell me where the Rose Hotel is?
B: Yes, It's two blocks straight ahead. You can't miss it.

A：打扰一下，你能告诉我玫瑰宾馆在哪儿吗？
B：往前过两条街就到了，你不会找不到的。