1.She has demonstrated Mr Obama's weakness with a vital Democratic constituency, the blue-collar worker.
她通过民主党中一个重要的选民阶层——蓝领工人——展示了奥巴马先生的弱点。
2.If you are an American blue collar worker of current electric equipment of the biggest company, earn one year 2, 5000 dollars.
如果你是美国最大公司通用电器的一位蓝领工人，一年挣2,5000美元。
3.As denim became more and more essential to blue-collar worker wear, the need for indigo increased, too.
由于牛仔布越来越重要的蓝领工人磨损，对靛蓝需要增加，也。