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！

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Whole poultry should reach 180 f; breasts, 170 F. Hamburgers made of ground beef should reach 160 f; ground poultry, 165 f.

所有的禽肉应达到华氏180度；胸肉，华氏170速；磨过的牛肉汉堡包应达到华氏160度；磨过的禽肉，华氏165度。

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AIX 5l Version 5.3 adds two new flags, -f and -f.

AIX 5l Version 5.3添加了两个新的标志，- f和- f。

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Eduardo Rojas is assistant director-general of F.A.O.'s Forestry Department.

VOA: special.2010.04.06

So, we see is when we use the octet rule to look at fluorine molecule, we're combining two fluorine atoms, and what we end up with is an f f molecule where they're sharing two electrons, so making that covalent bond.

那么，我们看到把八隅体规则用到氟分子上,就是把两个氟原子组合起来，最终得到的氟分子中两个原子,共用一对电子，这就构成了共价键。

麻省理工公开课 - 化学原理课程节选

So I said that we want to be talking about valence electrons here, so that means if we're talking about, for example, the octet rule for an f f molecule where we have two fluorine atoms, we need to write the valence electrons as dots around them.

我说过我们在这要讨论的是价电子，这就意味着，如果我们要讨论，比如，关于两个氟原子组成的分子的八隅体规则,我们首先需要把价电子画成围绕在它们周围的点。

麻省理工公开课 - 化学原理课程节选

Taiwan also needs F-16 fighters now, then fifth-generation F-35s later this decade, and submarines.

CENTERFORSECURITYPOLICY: Underestimating China

And John Griffins, G-R-I-F-F-I-N-S. As well as a JAG attorney representing the military was also present.

CNN: Transcript of court proceedings for CNN v. Michael Brown

The F-22 is stealthier and faster and has greater range and considerably more firepower than the F-35.

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