2. For this, he became known as the “Father of Hybrid Rice”.
为此，他成了著名的“杂交水稻之父”。
be known as “作为……而闻名”
be known for “因为……而闻名”
be known to “对于……而闻名”
He is known as a young poet.
He is known for both his poems and his paintings.
His music is known t o the public.
3.Now Dr. Yuan is working on developing super hybrid rice.
现在，袁教授正在致力于超级杂交水稻的研究。
work on 从事于；致力于；对……有影响
His dancing technique is good, but he needs to work on his fitness.
他的舞技不错，但还需要将身体练得健壮一些。
