They ask me for a deposit, and I only have to pay the rest when I get the goods.

他们让我先付个定金，我拿到货以后再付其余的钱。

Wait a minute. Something doesn't quite add up here.

等一下，这里面有蹊跷。

They're giving me this iPad for free, and I only have to give them this old plastic ring.

他们把这个iPad送给我，我只用给他们这个破破的塑料戒指。

No way. Something doesn't quite add up there.

哪有这么好的事儿，一定有溪晓。

重点讲解

Something feels wrong.

Something doesn't quite add up here.

not add up字面的意思是“加不起来，凑不到一块儿”就像一幅拼图，如果合不到一起就说明有问題,引申为“事有蹊跷，不对劲”，如：Something doesn't quite add up here.也可以摇摇头说：This doesn't fed rig^it.(这似乎有点不对劲。