又有 conference 要去,Scholarship 的 Foundation 幫我出報名費,好似有著數,但是原來...
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從朋友的Blog,找到這個:
+ Ringtone that adult>25 yrs cannot hear:
+ www.highring.com
+ (From the site): The ringtone is a sine wave at 14,400 hertz. It cannot be heard by many adults due to a condition called presbycusis, hearing loss as one ages. Whereas children, teenagers, and others can hear the high-pitched chirp clearly
(閱讀全文)
+ Ringtone that adult>25 yrs cannot hear:
+ www.highring.com
+ (From the site): The ringtone is a sine wave at 14,400 hertz. It cannot be heard by many adults due to a condition called presbycusis, hearing loss as one ages. Whereas children, teenagers, and others can hear the high-pitched chirp clearly
(閱讀全文)






