3 sentences

1. 我迎来了生命中的又一个里程碑。

   wǒ yíng​lái le shēng​mìng zhōng de yòu yī​ge lǐ​chéng​bēi.

   I've reached another milestone in my life.

   Source: CCMatrix

2. 生命中的每一个里程碑都值得庆祝。

   shēng​mìng zhōng de měi yī​ge lǐ​chéng​bēi dōu zhí​de qìng​zhù.

   Every milestone in life deserves to be celebrated.

   Source: CCMatrix

3. 学会骑自行车，是孩子生命里的一个发展里程碑。

   xué huì qí zì​xíng​chē, shì hái​zi shēng​mìng li de yī​ge fā​zhǎn lǐ​chéng​bēi.

   Learning to ride a bicycle is a developmental milestone in the life of a child.

   Source: CCMatrix