生态

In a sentence

• 生态环境对人类的生存发展非常重要。

  The ecological environment is very important for human survival and development.

  In this sentence, '生态' (shēngtài) is used in the phrase '生态环境' (ecological environment), referring to the natural ecosystems and their relationship with living organisms.

• 城市的生态系统需要更多的绿色空间来维持平衡。

  Urban ecosystems need more green spaces to maintain balance.

  Here, '生态' is part of the term '生态系统' (ecosystem), which characterizes the interconnected systems within urban settings involving biological and environmental interactions.

• 我们应该保护森林的生态，以确保它们的可持续性。

  We should protect the forest's ecology to ensure its sustainability.

  In this example, '生态' is used in '生态' (ecology) to emphasize the biological and environmental attributes of forests and the need for conservation.