1.Environmental groups plan to stage public protests during the conference.环境保护组织计划在会议期间组织公众抗议活动。

2.It protects against environmental hazards such as wind and sun.它可以保护免受风、太阳等环境因素的危害。

3.The form the human family takes is a response to environmental pressures.人类的家庭形式是为了应对来自生存环境的压力。

4.Recycling also helps control environmental pollution by reducing the need for waste dumps.对废弃物的回收利用能够减少对垃圾场的需求，从而也有助于控制环境污染。