A solitary viola plucks a lonely, soft F sharp.
一把中提琴独奏出孤寂婉约的升F调。
If you make an "OK" sign with your thumb and finger, that is the shape for the letter "f" in American sign language.
如果你用拇指和其他手指做一个 “OK” 的手势，那就是美国手语中字母 “f”的形状。
First you make the shape for the letter "f", then the shape for the letter "u", and then the shape for the letter "n".
你首先要做出字母“f”的形状，之后是字母“u”的形状，然后是字母“n”的形状。
The first word begins with an F.
第一个词以F开头。
F&C Motors, a major auto company, for example, is holding a press conference next week.
例如，F&C 汽车，一个大型汽车公司，将于下周举行新闻发布会。
Choose the best response from A to F according to the dialogue given.
根据所给的对话，从A到 F 中选择最佳答案。
In a word, the induced e. m. f. lags behind the current.
总之，感应电动势滞后于电流。
空服员：哦，它是一个很美丽的城市。
所以f不是已经是个浮点数了吗？
为什么要说F是一个梯度场？
Officially, the F-117 was obsolete.
从官方来说，F- 117已经过时。
F: is this your first time flying?
空服员：这是你第一次搭飞机吗？
F: I agree with the first and the last.
F：我同意第一点和最后一点。
Say that I give you a formula for f.
假如我给你一个关于f的式子。
Suppose I type in the word foo, F-O-O.
假如我输入了单词foo,f - o - o。
This test will help you verify question f.
这有助于验证问题f。
That is what we mean by critical point of f.
这个也就是临界点的定义。
So all together I get this change as a value of f.
那么把它们加在一起就得到了f的总变化量。
F: How do you know it's silly if you haven't asked?
F：你又没问，怎么知道会是个笨问题。
Now, wait for at least 30 seconds and repeat step f.
现在，等待至少30秒，然后重复步骤f。
为什么要使用-f 呢？
F I have my surface and I have my vector field f.
有一个曲面，还有一个向量场。
But that is not the life that John F. Kennedy chose.
但是，这并不是约翰·肯尼迪选择的人生。
We have a converse if F is defined in the entire plane.
如果F定义在整个平面上，反过来成立。
F: Feel free to drop by my office if you have a question.
F：如果有问题，请不要客气，随时到我的办公室来。
The tail command has another handy option, -f (follow).
tail命令还有一个有用的选项-f (follow)。
But it's a new vector field that you can build out of f.
这是一个新的向量场，可以用f来建立。
F: he's young. Therefore he'll pick up English quickly.
比方他还小，因此他会很快学好英文。
That is the contour plot of f with a hyperbola on top of it.
上面这个是f的等高线，黄色的就是双曲线。
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