无油费
no cost───无代价
no oil───没有油
at no cost───不花钱；不惜代价；以半价[不花钱等]
cost───n.(Cost)（美、英、罗、巴、法、荷）科斯特（人名）；v.成本为……；花费；使付出；使花许多钱（非正式）；给……估价；n.费用，代价，成本；损失；诉讼费用
cost to cost───[经] 成本比例法
oil───vi.融化；加燃油；n.油；石油；油画颜料；vt.加油；涂油；使融化
no no no no───不不不不
no no no───不，不，不
your cost───你的成本
Enhanced oil recovery of microorganism oil recovery is received in the oil industry with the advantages of low cost, powerful adaptability, simple construction, harmless reservoir and no-pollution.───微生物采油提高采收率技术以其成本低、适用性强、施工简单、不伤害储层及无污染等优点受到石油业的普遍重视。
Mercedes-Benz followed BMW in 2000 and began offering no-cost oil changes, fluid and filter replacements.───梅赛德斯·奔驰(Mercedes - Benz)仿效宝马，从2000年开始提供免费更换机油、制动液和过滤器的服务。
By experimental study, two phase flow measuring method was put forward on the basic of the no flow pattern identification, which could solve the oil well measuring problem by a low cost.───通过实验分析，提出建立在无流型识别基础上的两相流流量测量方法，用较低的成本解决油井计量问题。
Bikes can take you almost anywhere, and there is no oil cost!───自行车几乎可以带你去任何地方并且不耗费一丁点汽油