唐納森有一系列小的犯罪前科，但沒(méi)犯過(guò)大事。Donaldson was a petty crook with a string of previous offences.約翰迪爾發(fā)動(dòng)機(jī)配件及唐納森濾清器的代銷售.John Deere engine accessories and Donaldson Filters in lieu of sales.但根據(jù)唐納森的研究, 這些懷疑論者錯(cuò)了.But, according to Donaldso...