13岁高中生实验证明hand dryer产生的噪音对儿童伤害很大,终于解释了娃为什么不愿意用干手机了… <a href="https://www.cbc.ca/news/canada/calgary/calgary-student-nora-keegan-hand-dyer-research-decibel-1.5185853" target="_blank" rel="noopener">https://www.cbc.ca/news/canada/calgary/calgary-student-nora-keegan-hand-dyer-research-decibel-1.5185853</a> <a href="https://twitter.com/yegle/status/1143899108333146112" target="_blank" rel="noopener">https://twitter.com/yegle/status/1143899108333146112</a><br><br>