改革不可能一蹴而就。 A foreign language cannot be mastered at one stroke; we must make great efforts to learn it. 掌握一门外语决不可能一蹴而就，要付出艰苦的劳动。 The task cannot be accomplished by one single effort. 完成这项任务并非一蹴而就。
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翻译询价
