老师应首先对这一方法有一定的了解和研究的翻译：Teachers should have a certain understanding of this method and research 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Teachers should first have some knowledge of and research on the

Teachers should have a certain understanding of this method and research

Teacher should first have certain understanding and the research to this method

Teachers should be the first to have a certain amount of understanding and research

Teachers should have a certain understanding of this method and research