Sent away to be frozen to stop the fragile, historic pages from deteriorating.

为了防止脆弱的历史书页继续损坏，这些书物被送去冷冻。

But if you're stopping four, five, maybe six times a page because of new vocabulary, as a new English learner, that's not bad.

但是，如果你因为新词汇而每页停四、五次，也许六次，作为一个新的英语学习者，那也不错。