A random shopping trip downtown inspired his passion to do something about pets.

偶然的一次到市中心的购物之行激发了他对宠物行业的热情。

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The interaction has to be purposeful rather than, say, a random, last-minute trip with dad to the grocery store.

这种接触必须是有目的的，而不是所谓的随机，临时决定与父亲一起去逛商场之类的。

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The first-time visitor would walk blindly through the course and, thanks to the laws of random chance, probably not trip one in ten tries;

那第一次来这里的人或许会盲走，多亏了这种自由机会的法则，十次尝试中都不是一个行程；

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During the nearly hour-long interview, Fidel Castro reminisced about a long ago trip to Vietnam, and then in true Castro fashion, read a list of random statistics on Vietnam's social services.

NPR: Castro Gives First TV Interview Since Illness