Scientists have determined that our ability to recognize and remember faces peaks at age 30 to 34, about a decade later than most of our other mental abilities.

科学家已经确定，我们辨认脸部的能力在三十至三十四岁之间达到顶峰，比我们其他的心智能力的成熟晚大约十年。

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I'm a teetotaler, but I began to smoke at the age of 30. At first I did it only occasionally, but later I became addicted to it.

我不喝酒，但从30岁那年开始抽烟，先是偶尔为之，后来上了瘾。

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After Apple fell into a subsequent slump, a leadership struggle led its board's decision to back Mr. Sculley and fire Mr. Jobs two years later at the age of 30.

接下来苹果进入衰落期后，由于领导层的争斗，苹果董事会在两年后决定支持斯卡利，解雇时年30岁的乔布斯。

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