例句與造句

1. In 1908, George Harrison Shull described heterosis, also known as hybrid vigor.
2. Heterosis was explained by George Harrison Shull.
3. Shull also painted a number of early iris hybrids developed by the breeder Bruce Williamson, an experience that prompted him to become a plant breeder himself like his younger brother George Harrison Shull.
4. It's difficult to find george harrison shull in a sentence. 用george harrison shull造句挺難的