This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.

这种频率属于极低频的频率范围内，通常极低频的频带范围也在300hz以下。

youdao

From a macroeconomic viewpoint, this argument was rather implausible, except in the extremely long term, for China's economy is already three times the size of India's.

从宏观经济学的观点来看，这种看法令人很难信服，除非是在极长的时间内，因为中国的经济规模已是印度的3倍。

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He had been extremely tactful in dealing with the financial question.

他在处理这个财务问题时一直非常有分寸。

《柯林斯英汉双解大词典》

The first is the lack of oxygen in the extremely thin air.

VOA: special.2010.06.30

The association of Catholicism as the dominant religion in both of the enemy countries, France and Spain, is extremely important.

作为这两个敌国的国教,天主教会和法国及西班牙的联系举足轻重

耶鲁公开课 - 欧洲文明课程节选

It's not like Los Angeles, where it's extremely spread out, and you only...you're only in your car all the time,

与洛杉矶不同，洛杉矶太散了，那里，你只是一味地坐在自己的车里，

美国贫富差距？ - SpeakingMax英语口语达人

Crispus Attucks Park, like most neighborhoods, falls in the extremely broad middle between these two extremes.

FORBES: D.C. Park Reveals the Gap Between Microgrid Promise and Reality

We found a space in the extremely crowded economy lot and took the slow shuttle to the airport.

FORBES: Taking Rides from Strangers, Or How A Possible Marriage Proposal Can Make A Sane Person Crazy

The secret lies in the extremely light and stiff composite material made of boron carbide in an aluminium matrix used for the engine.

ECONOMIST: CAR DESIGN