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A big step towards modern technology was the invention of the first portable cassette player.
迈向现代科技的一大步是发明了第一台便携式盒式磁带播放机。
youdao
-
A big step towards modern technology was the invention of the first portable cassette player.
迈向现代科技的一大步是发明了第一台便携式盒式磁带播放机。
youdao