Students are using a new ring tone(鈴音)to receive messages in class —— and many teachers can't even hear the ring.
Some students are downloading a ring tone off the Internet that is too high-pitched to be heard by most adults. With it, high schoolers(高校學(xué)生)can receive text message alerts on their cell phones without the teacher knowing.
As people age, many develop what's known as aging ear(耳朵老化)—— a loss of the ability to hear higher-frequency sounds.
The ring tone is a spin-off(副產(chǎn)品)of technology that was originally meant to repel(擊退)teenagers —— not help them. A Welsh security company developed the tone to help shopkeepers disperse(分散)young people loitering(閑蕩)in front of their stores while leaving adults unaffected. The company called their product the "Mosquito(蚊子)."
Donna Lewis, a teacher in Manhattan, says her colleague played the ring for a classroom of first-graders —— and all of them could hear it, while the adults couldn't hear anything.
Note:
紐約高校學(xué)生從網(wǎng)絡(luò)上下載到一種只有他們自己能聽(tīng)到、而老師聽(tīng)不到的手機(jī)鈴聲。這種鈴聲的頻率非常高,一般成年人的耳朵不能聽(tīng)到。這種技術(shù)本來(lái)是用于驅(qū)逐在商店門(mén)口閑逛的小孩兒,結(jié)果反被用來(lái)擾亂課堂了。
Some students are downloading a ring tone off the Internet that is too high-pitched to be heard by most adults. With it, high schoolers(高校學(xué)生)can receive text message alerts on their cell phones without the teacher knowing.
As people age, many develop what's known as aging ear(耳朵老化)—— a loss of the ability to hear higher-frequency sounds.
The ring tone is a spin-off(副產(chǎn)品)of technology that was originally meant to repel(擊退)teenagers —— not help them. A Welsh security company developed the tone to help shopkeepers disperse(分散)young people loitering(閑蕩)in front of their stores while leaving adults unaffected. The company called their product the "Mosquito(蚊子)."
Donna Lewis, a teacher in Manhattan, says her colleague played the ring for a classroom of first-graders —— and all of them could hear it, while the adults couldn't hear anything.
Note:
紐約高校學(xué)生從網(wǎng)絡(luò)上下載到一種只有他們自己能聽(tīng)到、而老師聽(tīng)不到的手機(jī)鈴聲。這種鈴聲的頻率非常高,一般成年人的耳朵不能聽(tīng)到。這種技術(shù)本來(lái)是用于驅(qū)逐在商店門(mén)口閑逛的小孩兒,結(jié)果反被用來(lái)擾亂課堂了。