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　　If you need a new liver, doctors have about twelvehours to transport it from a donor.

　　如果你需要一个新的肝脏，医生有大约12个小时的时间从捐赠者那里将器官运送过来。

　　That ticking clock severely limits the ability of doctorsto get organs to patients.

　　时间对于医生为病人移植器官的能力起到了至关重要的作用。

　　Now researchers have demonstrated a method that kept rat livers viable up to four days.

　　现在研究人员展示的方法可以将鲜活的老鼠肝脏保存4天。

　　The scientists lowered the livers to below freezing temperatures, while flooding the tissue withantifreeze chemicals to prevent the formation of damaging ice crystals.

　　科学家们将肝脏温度降低到冰点以下，并把防冻剂喷洒在组织上，避免造成破坏性的冰晶形成。

　　But such cooling alone is not sufficient, due in part to the liver's wide variety of cell types andfunctions.

　　但是考虑到肝脏的各细胞类型及功能运作，仅仅这样的冷却是不够的。

　　So the researchers also used machine perfusion:

　　所以研究人员也使用了机器进行灌注：

　　as the livers were cooled they were flushed with solutions that kept them operational.

　　随着肝脏被冷却，他们同步进行保持所有细胞和功能运作的方案。

　　They were perfused again as they were brought back to above-freezing temps.

　　当把肝脏被带到高于冰点的环境中时，他们会再灌注一次。

　　All the rats that were implanted with 3-day-old livers survived for three months.

　　所有那些被移植已经保存3天肝脏的老鼠都活了3个月。

　　Nearly 60 percent of the rats with four-day-old livers survived.

　　几乎60%被植入保存的肝脏的老鼠都活了下来。

　　In contrast, no rats that received 3- and 4-day-old livers preserved by currently usedmethods survived.

　　相反，那些被移植了用一般方法保存3天或4天肝脏的老鼠，都没有幸存。

　　This work is an early step toward creating a system that could work in humans, which woulddramatically improve the chances of getting organs to people who desperately need them.

　　这项研究是对适用于人体统的一个初步尝试，如果成功就可以极大提高急需器官移植病人成功救治的机率。

　　词语解释

　　1.transport from 运输

　　That has allowed coal mines and shippers to switchto cheaper rail transport from costly trucks forheavy cargos.

　　这使煤矿和货运公司得以从昂贵的公路货运转投更为廉价的铁路运输。

　　Very little human generated code was needed tosupport the framework, making it easy to transport from one application to another andimproving code quality from the start.

　　只需书写少量的代码来支持这个框架，使得它易于从一个应用程序移植到另外的一个中，并且从一开始就提高代码的质量。

　　2.flood with 挤满，充满

　　The fields were flooded with the heavy rain.

　　田地被大雨淹没了。

　　They flooded him with advice.

　　他们给了他大量的忠告。

　　3.implant with 移植

　　One concern with a fixed-stem implant with a mobile head has been the risk of osteolysis .

　　带活动头的固定柄植入物需要考虑骨质溶解的风险。

　　It attaches RFID tags to the device packaging, allowing hospitals to scan a tag and storeinformation about an implant with the patient's records.

　　比如在医药行业中，医院采用信息域跟踪服务器来跟踪植入病人体内的医疗设备。

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