Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

我国有1.8万公里大陆海岸线，1.4万公里岛屿海岸线，海洋资源丰富。近年来，我国积极推动海上养殖业转型升级，不仅为保障粮食安全提供了新途径 ...