每日口說挑戰 別再數頭上的白髮了！來看看白髮怎麼來的！ (Why Some People's Hair Turns Gray)

今日挑戰句子

And, again, it's felt that it's probably due to the oxidative damage that smoke causes and how it affects the pigment-producing cells in the hair.

相同的，有人將這歸咎於抽菸對頭髮裡製造黑色素的細胞造成的氧化損傷。