tiān kōng
ท้องฟ้า; สวรรค์
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天空很蓝。
tiān kōng hěn lán.
The sky is blue.
飞机在天空飞翔。
fēi jī zài tiān kōng fēi xiáng.
The plane is flying in the sky.
星星在天空闪烁。
xīng xīng zài tiān kōng shǎn shuò.
The stars are twinkling in the sky.
苍穹 (cāng qióng)
firmament
天穹 (tiān qióng)
sky vault
地面 (dìmiàn)
ground
地下 (dìxià)
underground
The Chinese word 天空 (tiānkōng) for "sky" is a compound of two characters: 天 (tiān) and 空 (kōng). The character 天 originally meant "great" or "supreme", and was used to refer to the sky as the highest and most powerful force in the universe. The character 空 originally meant "empty" or "void", and was used to refer to the vastness and emptiness of the sky. When combined, the two characters 天 and 空 create the word 天空, which perfectly captures the essence of the sky as both vast and majestic.