光速是宇宙中最快的速度。 光速是宇宙中最快的速度。 光速是宇宙中最快的速度。

The speed of light is the fastest speed in the universe.

Simplified
光速是宇宙中最快的速度。
Pinyin
Guāngsù shì yǔzhòu zhōng zuìkuài de sùdù.
Bopomofo
ㄍㄨㄤ ㄙㄨˋ ㄕˋ ㄩˇ ㄓㄡˋ ㄓㄨㄥ ㄗㄨㄟˋ ㄎㄨㄞˋ ˙ㄉㄜ ㄙㄨˋ ㄉㄨˋ。

Written with HSK 7-9 vocabulary, at CEFR level C1.

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