而1990年，芭比的头发变成了短款蓬松的波波头自带刘海，90年代末，她又变成长发了，还配有装饰物，那样小孩子们就可以把她的头发弄卷或造一个新发型。
While ea Barbie from 1990 sported a short shaggy bob and fringe, by the end of the Nineties she sported long hair and came with accessories so children could curl or twist it into a new look.
科学家们把无线电波波长缩短到十米以内，使得世界性的通讯成为可能，那是30年代的事情。
The scientists put radio wavelengths is shortened to ten meters, making the world of possible communication, that is the30's thing.
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