1.我国如今面临的紧迫问题之一就是如何平衡经济发展和环境保护的关系。
One of the pressing problems our nation facing today is how to balance the relationship between economic development and environmental protection.
2.很明显,需要立即采取行动禁止过度捕捞,从而维持生态平衡。
Quite obviously, immediate action is needed to forbid overfishing so as to maintain ecological balance.
3.不可否认,植物在维持地球生态系统的平衡上起到了关键的作用。
It is an undeniable fact that plants play a vital role in maintaining the balance of the earth's ecological system.
4.也许当今困扰国家的最危险的现象之一是遍布全国各个领域的污染问题。
Perhaps one of the most dangerous phenomena gripping the nation today is the pollution problem, which is pervasive in all the fields of the whole nation.