Elsewhere, boffins are working on locomotive engines that run on methanol extracted from grass growing alongside India's railway lines, and on super-compact medical equipment that costs a fraction of the price of similar products in the west. 在其它区域,科研人员正在研制一种以印度铁道两旁生长的野草提取的甲醇为燃料的机车发动机,以及超小型医疗设备价格只是西方类似产品的零头。