尊敬的各位领导、各位老师、各位同学、各位来宾:尊敬的李先生的家人们:你们好!今天,我们怀着十分崇敬的心情,纪念中国杂草科学奠基人、中国杂草研究会创建者、著名植物学家、我们的导师——李扬汉先生诞辰100周年。我们身居大洋彼岸,不能亲临现场,但我们对恩师的感激之心、怀念之情和大家一样,并未因距离而有丝毫减少。李扬汉先生是最著名的杂草科学家、著名的植物学家,在中国和世界杂草学界和植物学界享有崇高的声誉。他是中国杂草研究会创始人,是中国第一位指导农业植物学和杂草科学专业的研究生导师,为中国和世界培养了诸多优秀的杂草科学家、植物学家和农业学家,为中国和世界的农业和农作物杂草防除作出了巨大 Distinguished leaders, ladies and gentlemen, ladies and gentlemen, Dear guests, Dear Mr. Lee’s family: How are you? Today, with great reverence, we are honoring the founder of Chinese weed science and the founder of China Weed Research Association , Famous botanist, our mentor - Mr. Li Yanghan 100th birthday. As we live on the other side of the ocean, we can not visit the scene, but our gratitude to the mentor, like everyone, has not diminished by any distance. Mr. Li Yanghan is the most famous weed scientist and famous botanist who enjoys a high reputation in weeds and botany circles in China and the world. He is the founder of China Weed Research Association, is the first Chinese mentor to direct agricultural botany and weed science, and has trained many excellent weed scientists, botanists and agricultural scientists in China and the world. Weed control in agriculture and crops in China and in the world has made a huge difference