hard nut字面兴致为“鉴定的坚果”，然而其骨子中枢语义为：

1. 中枢比方义（最常用）：难勉强的东说念主、执意的东说念主、固握己见的东说念主，侧重指特性倔强、不易被劝服、不莽撞调解的东说念主。

2. 高频推广义：穷困、难办的事、难以解决的问题、难勉强的东说念主/深邃决的事

考验中枢考点固定搭配：a hard nut to crack（难以使之开裂的坚果）难勉强的东说念主/深邃决的事。

如：

Each has his own hard nut to crack.; Each has his own trouble.

家家齐有一册难念的经。

He is a hard nut to crack， and he never opens his heart to his lover easily.

他是个难敞振作扉的东说念主，从不莽撞对爱东说念主吐露心声。

She is a hard nut in love， not believing in romantic promises easily.

她在爱情里是个固握的东说念主，从不莽撞坚信纵脱首肯。

Winning her heart is a hard nut to crack， for she has high standards for marriage.

获取她的芳心是件难事，九游会j9官方网站APP下载因为她对婚配有着极高的范例。

Their marriage conflict is a hard nut to crack， and neither side is willing to compromise.

他们的婚配矛盾难以化解，两边齐不愿调解。

He seems like a hard nut， but he is kind-hearted once you get close to him.

他看似是个难相处的东说念主，b体育app可一朝亲近起来就会发现他心肠和善。

The political reform is a hard nut to crack due to various conflicting interests.

受多方利益败坏影响，这场政事矫恰是个难办的穷困。

Solving the regional inflation problem is a hard nut to crack for the government.

解决地区性通货彭胀问题，对政府而言是个难办的挑战。

The bilateral trade negotiation is a hard nut to crack for both diplomatic teams.

这场双边买卖接洽，对两边社交团队来说齐是难啃的硬骨头。

The enemy’s fortified position is a hard nut to crack for our assault troops.

敌军的防护工事，对本身突击部队来说是难以攻克的堡垒。

This business deal is a hard nut to crack， we need to find a new way.

这笔交往太难科罚，咱们得另寻主义。《绝命毒师》

The suspect is a hard nut to crack， he refuses to say a word.

这名嫌疑东说念主执意不化，一句话齐不愿说。《神探夏洛克》

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