单词：con-causal
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单词：con-causal 相关文章
Recent hearing tests on teens show an increase in hearing loss over the last generation, possibly as a result of increased earbud use. Are you listening to me through headphones? Because heres a sample of what might be harming the ears of teenagers.
发表于:2019-01-02 / 阅读(96) / 评论(0)
60秒科学
60秒科学
After proposing a permanent fix for its Dreamliner 787 to the Federal Aviation Association last Friday, Boeing has met with its Japanese battery maker GS Yuasa on how to get the Dreamliners back in the air. Boeing's said to be proposing a stronger co
发表于:2019-02-14 / 阅读(49) / 评论(0)
英闻天下
英闻天下