2 sentences

1. 星系是宇宙的命脉。

   xīng​xì shì yǔ​zhòu de mìng​mài.

   Galaxies are the lifeblood of the universe.

   Source: OpenSubtitles

2. 传统是我们的命脉。

   chuán​tǒng shì wǒ​men de mìng​mài.

   Tradition is our lifeblood.

   Source: OpenSubtitles