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。
Officially, the F-117 was obsolete.
从官方来说，F - 117已经过时。
所以f不是已经是个浮点数了吗？
This test will help you verify question f.
这有助于验证问题f。
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。
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。
Let's think about the tangent plane with regard to a function f.
我们来考虑，关于函数f的一个切平面。
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。
So, that's just a single point. What about f equals minus one?
仅仅是一个点，那么f=-1呢？
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。
The truth is probably somewhere between those extremes, especially if the J-20 has F-117 DNA.
事实的真相可能介于两者之间，特别是J - 20带有F - 117的影子。
为什么要使用-f 呢？
This happened to the even more sophisticated and expensive F-22.
类似情况曾发生在更先进更昂贵的F - 22身上。
Say that f, our vector field is actually the gradient of some function.
也就是向量场f实际上是一个函数的梯度。
It is fully integrated into the F-22 \ 's electronic suite.
它完全被集成到F - 22的电子系统中。
The tail command has another handy option, -f (follow).
tail命令还有一个有用的选项-f (follow)。
This will result in lower costs for the F-35B Lightning II Programme.
这将降低F - 35 B“闪电ii”项目成本。
To stop the tail -f command, use Ctrl + C to break the processing.
要停止tail-f命令，使用Ctrl +C来中止进程。
Well, we have seen that it is given by the partial derivative f sub x.
我们已经发现,它由f对x的偏导数给出。
Attendant f: This one could go on as carry on luggage if you like.
地勤人员：如果您愿意的话，这件行李可以做为手提行李携带。
Suppose I type in the word foo, F-O-O.
假如我输入了单词foo,f - o - o。
The first word begins with an F.
第一个词以F开头。
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。
这个人的名字叫F。
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。
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。
Manage all F&B promotion, and sales work.
负责餐饮部各项推广、销售工作。
Manage all F&B promotion, and sales work.
负责餐饮部各项推广、销售工作。
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