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.
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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