The weather suddenly grew cooler, and almost at once the leaves turned garish shades of yellow and red, so bold that the mere sight of trees hurt my eyes.

天气突然转凉，转眼间，树叶变成一片绚丽的红黄色，色调如此鲜丽，以致我看到树木就觉得眼睛刺痛。

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In 1996, a NASA study caused a sensation when it announced the mere possibility of fossilized bacteria in a meteorite believed to be from the Red Planet.

NEWYORKER: The Cosmic Menagerie