例句與造句

1. While professionally established, Hall went to work for ecologist Frederic Clements at the David Keck and William Hiesey in 1926 and Jens Clausen in 1931.
2. The genus was extensively revised by David Keck between 1932 and 1957; in 1946 the American Penstemon Society was formed to promote both horticultural and botanical interest.
3. "' David Keck "'is a Canadian author, and teacher, who has Masters Degrees in English Literature, History, and Education.
4. It's difficult to find david keck in a sentence. 用david keck造句挺難的