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。
Running the make -f command in any given sub-directory will build that specific component.
在任意给定的子目录运行make- f命令就构建特定组件。
Attendant F: and make sure there are no sharp objects in your hand luggage.
地勤人员：请确认您的手提行李中没有任何锋利的物品。
Ascend 1 F light is dizzy, make him also watch not naturalistic.
上了一层光晕，令他也看不真切。
Ascend 1 F light is dizzy, make him also watch not naturalistic.
上了一层光晕，令他也看不真切。
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