Fed is spelled f-e-d. But your note says f-e-e-d, telling Dad to feed the dog!

“Fed”的拼写是 f-e-d，但你的纸条上写着 f-e-e-d，这是在告诉爸爸要喂狗！

youdao

Uncontrolled airspace is designated Class F, while controlled airspace below 5,490m above sea level and not in the vicinity of an airport is Class E.

无交通管制的空域被定为等级 F，而低于海拔5490米、不在机场附近的管制空域是等级 E。

youdao

In a word, the induced e. m. f. lags behind the current.

总之，感应电动势滞后于电流。

《新英汉大辞典》

A calf is a young cow. A young female cow, especially one that has not yet had a calf, is called a heifer: H-E-I-F-E-R.

VOA: special.2009.07.21

There was a huge old insurrection called the Fronde, f-r-o-n-d-e.

有一起被称为投石党运动的起义

耶鲁公开课 - 欧洲文明课程节选

"F-E-A-R for Financial reform, Energy woes,Asian tensions and Recessionary concerns.

VOA: standard.2010.05.25

"Siilasmaa is clearly a visionary, " says Louis Judice, a regional manager for HP's Mobile E-Services Bazaar, of which F-Secure is a member.

CNN: Virus protection coming for wireless users

Mercedes-Benz has the A-Class E Cell, sold only in Europe, and the B-Class F-CELL, but plans to debut the SLS-AMG E Cell in a battery electric version by 2013.

FORBES: Super Cars And The Changing Landscape Of Electric Luxury

The weekly chart shows a more than four-month trading range (lines e and f).

FORBES: Income ETFs with Strongest Charts