- 飛(bird flying; wings spread (pictographic))
Draw a picture of a bird spreading its wings and flying up into the sky.
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femtosecond, fs, 10^-15 s
A femtosecond is a unit of time.
Draw a picture of a bird spreading its wings and flying up into the sky.
A second is as tiny as a grain of rice, the shortest moment in time.
femtosecond, fs, 10^-15 s
A femtosecond is a unit of time.
Draw a picture of a bird spreading its wings and flying up into the sky.
A second is as tiny as a grain of rice, the shortest moment in time.
femtosecond, fs, 10^-15 s