单词 | a hard nut to crack/ a tough nut to crack |
释义 | a hard nut to crack/ a tough nut to crack phrase [usually verb-link PHRASE] See full dictionary entry for nut If you say that something is a hard nut to crack or a tough nut to crack, you mean that it is difficult to do or to understand. [informal] Getting out there is in many ways the hardest nut to crack. |
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