creating new varieties of plants造句

例句与造句

1. There is also a breeders'exemption ( research exemption in the 1991 Act ) that allows breeders to use protected varieties as sources of initial variation to create new varieties of plants ( 1978 Act ), or for other experimental purposes ( 1991 Act ).
2. It's difficult to find creating new varieties of plants in a sentence. 用creating new varieties of plants造句挺难的