Getting an apology from him was like getting blood from a stone.

让他道歉几乎是不可能的。

《牛津词典》

Let's face it, your code is already well written and well tuned; getting any performance gains there is going to be like getting blood from a stone.

事实是，你的代码已经写得很好并且很好地调整过，从那里获取性能增益会好比从石头中获取血液一样艰难。

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Eating like a caveman from the Stone Age helps lower blood pressure and reduces the risk of developing heart disease, Swedish researchers found.

瑞典一项研究发现，石器时代的穴居人的食谱能降低血压和减少心脏疾病发病率。

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