孔子云：三十而立，四十而不惑，五十而知天命。
Kong Zi: cloud at forty and perplexed, fifty to know your destiny.
一些人在这儿待了四十年或者更久，而也有一些人巴不得快点离开这里。
Some stay for 40 years or more, and some leave as fast as they can.
他年已四十，瘦骨嶙峋，一张干瘦的脸，刻板而迂腐。
He was a man of forty, thin, with a pinched face, precise and rather pedantic .
而全球大约共有一百四十亿个灯泡，它们几乎随处可见，而且经常亮着。
And light bulbs-some 14 billion of them around the world-are almost everywhere and often on.
而全球大约共有一百四十亿个灯泡，它们几乎随处可见，而且经常亮着。
And light bulbs-some 14 billion of them around the world-are almost everywhere and often on.
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