恢复西部原有良好生态环境，进行西部生态环境重建具有重大意义。
It has great significance of renew and reconstructed the original ecological environment of western.
黄土高原的治理目标主要有两条：一是治理水土流失，恢复植被，重建良好生态环境；
There are two principal ways to control the Loess Plateau:one is the harness of soil and water erosion and the rehabilitation of vegetation to rebuild the ecological environs;
这项活动是由马里布环境教育基金会所赞助，目的在于传达避免污染海洋、为鲸鱼维持良好生态环境的信息。
The event was sponsored by the Malibu Foundation For Environmental Education to send a message to keep the ocean clean for the whales.
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