"The big take-home message here isthat, as beer ages, a whole series of breakdown products grow with time, "said Tom Shellhammer, a brewing scientist at Oregon State University inCorvallis.

“这里可以‘带回家’的消息是，当啤酒衰老时，整个一系列的产品随之降解，”汤姆.希哈玛(Tom Shellhammer)，是俄勒冈州大学(在卡珐里斯(Corvallis))的酿酒科学家。

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Time machine is born in 2050, scientists use it to go cross the time to reach the future. One scientist come to a subway in 2100, and find each of the panssengers with a big bag for work.

2050年时光机诞生，科学家穿越到2100年某地铁里，见所有人背着个大背包去上班，便问道：背包何用？

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