例句與造句

1. Operator theory | workplaces = Washington University | thesis _ title = Some Representation and Inversion Problems for the Laplace Transform | patrons = | doctoral _ advisor = David Widder | alma _ mater = Harvard | thesis _ year = 1947 | influenced = Richard Askey }}
2. It's difficult to find david widder in a sentence. 用david widder造句挺難的