科学家一直在探索宇宙中是否存在其他生命。

Kēxuéjiā yìzhí zài tànsuǒ yǔzhòu zhōng shìfǒu cúnzài qítā shēngmìng.

Scientists have been exploring whether there is other life in the universe.

这部纪录片用生动的画面展示了宇宙的诞生和演化。

Zhè bù jìlùpiàn yòng shēngdòng de huàmiàn zhǎnshì le yǔzhòu de dànshēng hé yǎnhuà.

This documentary uses vivid images to show the birth and evolution of the universe.

小时候我常常抬头看星星，想象宇宙有多大。

Xiǎoshíhou wǒ chángcháng táitóu kàn xīngxing, xiǎngxiàng yǔzhòu yǒu duō dà.

When I was little, I often looked up at the stars and imagined how big the universe is.