The committee will need to winnow out the nonsense and produce more practical proposals if it is to achieve results.委员会若要取得成果，需要摈除不着边际的观点，提出更实际的建议。The fan produces an artificial wind to winnow the grain.风扇能产生人造风来扬谷。It's important to winnow truth from falsehood in scientific research.在科研工作中去伪存真是很重要的。He needs to winnow down his options.他要缩减选择范围。