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/hɜːts/
赫兹(频率单位,每秒周期数)
The 🔊 human 🔊 ear 🔊 can 🔊 hear 🔊 sounds 🔊 ranging 🔊 from 🔊 about 🔊 20 to 🔊 20,000 hertz 🔊 .
人耳可以听到大约20到20,000赫兹范围内的声音。
The human ear can hear sounds ranging from about 20 to 20,000 hertz.