诞生

例句：

1. 1. The baby's first steps were a moment of great joy for the parents.
   婴儿的第一步对父母来说是一个极大的喜悦。
2. 2. The new president's inauguration ceremony was a grand event.
   新任总统的就职典礼是一个盛大的事件。
3. 3. The birth of a new species is often marked by a significant change in the environment.
   一个新物种的诞生往往伴随着环境的重大变化。