persist insist preserve的区别
persist insist 释义：
坚持坚持
例句：
The simplest thing is to persist, the most difficult thing is to insist on.
最简单的事是坚持，最难的事还是坚持。
preserve释义：
vt. 保存；保护；维持；腌；禁猎
n. 保护区；禁猎地；（某人或群体的）专门活动；果酱；蜜饯；腌菜
例句：
He would rather pay a huge fine to preserve his reputation.
他宁愿支付巨额的赔偿来维护自己的名声。
词组：
preserve food保藏食物
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