空间技术

kōng jiān jì shù zhí dào xiàn zài cái zhēn zhèng qū yú chéng shú

空间技术直到现在才真正趋于成熟。

Space technology didn’t really come of age until now.

wǒ men zì jǐ de kōng jiān jì shù bù yě fā zhǎn le ma

我们自己的空间技术不也发展了吗？

Haven't we developed space technology on our own?