When you" snap up" something, it means you get something quickly and with enthusiasm.

当你snap up什么东西时，这意味着你能快速并充满热情地抢购到一些东西。

If you snap up something, you get it quickly or immediately and usually with enthusiasm.

如果你snap up什么东西，你很快或马上就能得到它，而且通常热情十足。

Oh well, the phone wasn't that good anyway - and now I've saved my money I can go and snap up something else in the sales.

哦，好吧，反正手机也没那么好，现在我省下了钱，可以去买些其他的东西了。