Persistence: Users must be able to save their work and load it again later, so a persistence mechanism is needed.

持久性：用户必须保存他们的工作，并在以后再次装载它，所以需要一个持久性机制。

youdao

Because each chunk is loaded on demand, executed, then shut down, this state must be stored externally, such as in a database or another persistence store.

因为每个块都是按需加载、执行、关闭，状态必须存储在外部，比如在数据库里，或是其它持久化存储。

youdao

Massive, consistent action with pure persistence and a sense of flexibility in pursuing your goals will ultimately give you what you want, but you must abandon any sense that there is no solution.

大量的不变的行为，坚持不懈和机动性终极会使你达到追求的目标，但是必须摒弃对于题目没有解决办法的任何想法。

youdao

But by his persistence Joyce established a principle, which is that the artist must have absolute freedom to work with the world he or she has stumbled across, the world as it is.

NEWYORKER: Silence, Exile, Punning