每日背诵第一期14
Have you ever thought about why people are ticklish? According to scientists, ticklishness is a defense mechanism humans developed against bugs, spiders, and other critters that may be touching our skin. Feeling ticklish is our built-in response to predators or threats, and combines the sensations of touch and pain.
你有没有想过人为什么会怕痒？根据科学家的观点，怕痒是一种防御机制，是人类把它培养来对付那些可能接触我们皮肤的虫子、蜘蛛或其它生物。怕痒是我们对侵扰者或威胁产生的内在反应，它使触觉和痛觉结合起来了。
您支付 0.1元 就能下载这个MP3文件！立即支付
-
蒋健棠英语实用句子(114):Having the hotel grounds landscaped -
蒋健棠英语实用句子(115):Ann was all stressed out last week
-
蒋健棠英语实用句子(116):The rain spoiled our picnic
-
蒋健棠英语实用句子(117):That English exam was a real killer
-
蒋健棠英语实用句子(118):They ventured out on the rough sea
-
蒋健棠英语实用句子(119):Activities will interfere with your studies
每日背诵第一期14：等您坐沙发呢！