But the cyclo, once an iconic fixture in this bustling Asian city, has seen better days.

不过，作为这个忙碌的亚洲城市里的标志性运输工具，人力车曾有着悠久的历史。

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you might not know the name but his art, once seen, tends to stay with you.

弗兰克弗雷泽塔 ...你或许不知道他的名字，但他的艺术，一旦为你所见，终生难忘。

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But once you have seen how the painting works, Mondrian will never be the same.

但是一旦你看到这幅画是怎样完成的，蒙德里安就和之前不再是同一个人了。

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The strolling man and woman mentioned in the title are easy to miss, but once seen they add an unmistakable note of foreboding to the composition.

WSJ: Vincent Van Gogh Up Close | Philadelphia Museum of Art | A Matter of Perspective | By Jonathan Lopez

But Ebay pulled ahead, and once it was seen as the leader, the brutal economics of marketplaces made it the superpower of online auctions.

FORBES: Why the world would be better off with one big stock market.

But Sir Peter once told me how he had seen bobbies among the T-shirted crowds of a summer community fete looking more like Robocop than Dixon of Dock Green.

BBC: The police are the public and vice versa