ecological and environmentproblems

• 生态环境问题

ecological and environmentproblems的用法和样例：

例句

1. Environmental concerns are both intensely local and completely global.
   环境问题不仅是非常地域性的，而且完全是全球性的问题。
2. The sandstorm diffusion is an ecological environment problem which is difficult to analyze.
   风沙扩散是一个比较难于研究的生态环境问题。