?be polished again and again; be revised and rewritten many times; be a finished product;
?have gone through fire and water; be thoroughly tempered (/steeled); well-experienced; well-seasoned
? 他的文章經(jīng)過～，無須作任何改動。His article has been polished again and again. There’s no need to make any altenation.
? 你放心吧，咱們的人都是～的鐵漢子，會殺敗官兵的。(姚雪垠《李自成》Ⅰ—170) Don’t worry. All our men are tried and tested. They’ll rout the enemy.
千錘百煉
?steeled and tempered
?be polished again and again;highly finished
～的老紅軍戰(zhàn)士 tempered (or seasoned)Red Army soldier /～的好文章repeatedly-polished good article
千錘百煉qiān chuí bǎi liàn
比喻人經(jīng)歷多次艱難險阻的鍛煉和考驗；也比喻文章經(jīng)過反復(fù)、細致的修改。thoroughly tempered, well-experienced, be a finished product