保存的英文是:keep。
例句:
1、我要保存这封信,以防万一。
I'll keep the letter as a precaution.
2、你需要保存这些信件吗,还是干脆把它们扔掉?
Do you need to keep these letters or shall we bin them?
3、保存好收据作为购货凭证。
Keep your receipt as proof of purchase.
4、保存收据,作为购物证明。
Keep the receipt as proof of purchase.
5、我们说过要保存它们的。
We said we would keep them.