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。
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。
It came from the heart of the earth, a stone so rare men will do anything to possess it. And all who touch it are left with blood on their hands.
它来自地球深处，一块希罕的石头，人们不惜一切代价将其据为己有，碰过它的人手上都沾满了鲜血。
Getting money from Simon is like getting blood out of a stone: he just will not pay.
要从西蒙那里得到钱就像缘木求鱼，他决不会给的。
It's no use asking your father for a loan. You can't get blood from stone.
向你父亲告贷根本不可能。你什么也得不到。
It's no use asking your father for a loan. You can't get blood from stone.
向你父亲告贷根本不可能。你什么也得不到。
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