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We have come a long way from the gas discharge tube to the heavens.
我们在从气体放电管到,世界还有很长的路要走。
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$firstVoiceSent
- 来自原声例句
We have come a long way from the gas discharge tube to the heavens.
我们在从气体放电管到,世界还有很长的路要走。
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