2 sentences for 一世 (yī​shì — lifetime)

1. 他这一世都在为贫困儿童奔波忙碌。

   tā zhè yī​shì dōu zài wèi pín​kùn ér​tóng bēn​bō máng​lù.

   He spent his whole life working for children in poverty.

   Source: Dong Chinese Dictionary

2. 电影里的男女主角在这一世相遇，其实是前世的缘分。

   diàn​yǐng lǐ de nán​nǚ zhǔ​jué zài zhè yī​shì xiāng​yù, qí​shí shì qián​shì de yuán​fèn.

   The male and female leads meeting in this life is actually a result of fate from their previous lives.

   Source: Dong Chinese Dictionary