Oil sands -- or rather I should say tar sands -- "oil sands" is a P.R.-created term so that the oil companies wouldn't be trying to promote something that sounds like a sticky tar-like substance that's the world's dirtiest oil.
油砂－或者我该称它为沥青砂－ “油砂”是公关部门创造的词汇 使石油公司不至于像是推广 某种彷佛沥青般黏稠的物质 或世上最脏的油