听力文本

This is Scientific American — 60-Second Science. I'm Larry Greenemeier.
During intense exercise—sprinting, for example—your body breaks down glucose and produces what's called lactate. That substance can build up faster than it can be further processed. If your idea of a workout is running to the refrigerator during commercials, you probably associate the lactate buildup with a burning in your muscles.
But for well-conditioned athletes, excessive lactate means muscle fatigue and diminished performance. So athletes would like to know their actual lactate levels during training and competition. Blood tests are one way to measure lactate levels, but are not practical in the middle of a game or race. So a goal has been to find a way to measure lactate in saliva to monitor muscle endurance. Which researchers at Palo Alto Research Center, known as PARC, and the University of California, San Diego, say they've achieved.
Working with flexible hybrid electronics group NextFlex, the team developed a flexible, plastic mouth guard laden with sensors that can continuously monitor lactate concentrations in saliva. The mouth guard's batteries are rechargeable wirelessly, and the device can use low-power Bluetooth to send information to smartphones, watches and other electronic devices. PARC scientists presented their work at the recent SEMI conference on electronics manufacturing in Monterey.

PARC—which is part of Xerox and best known for its pioneering work in PCs, printing and computer networking in the 1970s—has demonstrated a fully-functional prototype mouth guard. Assuming they can get additional funding, they plan to make different types of mouth guards that can be worn during high-intensity sports like football, lacrosse and boxing to measure hydration levels as well as glucose and cortisol concentrations.
With all this bodily information at hand, athletes and their coaches should be able to monitor fatigue and improve training regimens. Without breaking stride.
Thanks for listening for Scientific American — 60-Second Science. I'm Larry Greenemeier.

参考译文

这里是科学美国人——60秒科学BNJdppyjRm^uiev。我是拉里·格林迈耶_mf9-@u6L=BG%jx。
在进行短跑等剧烈运动时，你的身体会分解葡萄糖，并产生乳酸_LO4S;Om3C#i2(,BJ2|。而乳酸可堆积的速度比其可被进一步加工的速度要快9q-6[|cRvTt+5XEx@I。如果你对“锻炼”的理解是，在广告期间跑到冰箱去拿吃的，那你可能会把乳酸堆积和肌肉燃烧联系起来*j=NJBvON[4(6l。
但是，对于状态良好的运动员来说，乳酸过量意味着肌肉疲劳和成绩下降o;D,a4*uZ.+b。因此，运动员想知道自己在训练和比赛中的实际乳酸水平CnAQnEnYaAq。血液检测是测量乳酸水平的一种方法，但是这在比赛或速度竞赛中并不实用CHUaM)y]!TtLvz]a@Yz。因此，科学家的目标是找到一种方法，通过测量唾液中的乳酸来监测肌肉耐力kBaqheO8HHm。帕洛阿尔托研究中心（简称PARC）和加州大学圣迭戈分校的研究人员说，他们已经实现了这个目标(o*uY1_4Z-,。
该团队与柔性混合电子集团NextFlex合作，开发了一种柔性塑料护口器，上面设置的传感器可以持续监测唾液中的乳酸浓度02*]l)Y9Ef8。护口器的电池可以无线充电，该装置可以用低功率蓝牙向智能手机、手表和其他电子设备发送信息I&L|9-&_]0_N。最近，在蒙特利举行的聚焦电子设备制造的国际半导体产业协会大会上，帕洛阿尔托研究中心的科学家展示了他们的成果yS,y*mUEb)xR*Yw!6。
帕洛阿尔托研究中心隶属于施乐公司，该研究中心在上世纪70年代因在个人电脑、打印机和计算机网络方面的创举而闻名，他们在大会上展示了功能完整的护口器样品+Bbt5;FTx|9^nqG~*Pf。如果能获得额外资金，他们计划制造能在橄榄球、长曲棍球和拳击等高强度运动中佩戴的不同种类的护口器，以测量水分状态以及葡萄糖和皮质醇浓度~F.R]DrONyr。
掌握了所有这些身体信息以后，运动员和他们的教练应该能够监测疲劳并改善训练方案0y=SE3@E(VF5jztjUD]a。而不用中断训练,y(GJgb#K)2。
谢谢大家收听科学美国人——60秒科学fkY#.-;t6ZNXH。我是拉里·格林迈耶gCt3f3E=jq|xJx0hP。

译文为可可英语翻译，未经授权请勿转载！

重点讲解

重点讲解：
1. break down （使）（物质）分解；
Sugar and starch are broken down in the stomach.
糖和淀粉在胃里被分解@ht[r#[_nx2u[#@3=*[。
2. build up （使）积聚；（使）逐渐增加；
Slowly a thick layer of fat builds up on the pan's surface.
慢慢地，平底锅表面积起了一层厚厚的油脂xVKm5aSpYL。
3. in the middle of (某件事或某段时间的)中期；
I had a little lapse of concentration in the middle of the race.
我在比赛中途一时走神4Ic&8n(1y(gslK。
4. at hand （空间或时间上）接近的，不远的；
Having the right equipment at hand will be enormously helpful.
手头上有合适的设备将会帮上大忙bcfWnp*IOjFS@Y]^7d。