About one year from now, NASA expects to see it making tracks on Mars.

美国国家宇航局希望在大约一年之后看到它跟踪拍摄火星的情况。

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The recent tracks of the fox or otter, in the yard, remind us that each hour of the night is crowded with events, and the 28 primeval nature is still working and making tracks in the snow.

院子里雪地上，狐狸和水獭所留下的足迹犹新，这使我们想起：即使在冬夜最静寂的时候，自然界生物没有一个钟头不在活动，它们还在雪上留下痕迹。

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Her seat slides forward and back on tracks in the center of the cockpit, which increases the OARS 'Angle of attack as they enter the water — making each stroke longer and more efficient.

她的座椅下面有个轨道，因此座椅可以前后滑动，这样在桨入水时可以增大它们的迎角，使每一次划船时桨在水中停留的时间更长，从而更有效率。

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Three new lines will begin whisking passengers to and fro before the Games start in August and, by 2020, the route map will comprise 19 lines and 561 kilometers of tracks, making the network one of the world's largest.

CNN: Beijing commuters feel the squeeze

Finally, Google has brought its Google Play scan and match feature to the US. The service looks at your local collection of music and identifies those tracks automatically, making them instantly available for access through Google's systems.

ENGADGET: Editor's Letter: Looking back

Regional Autonomy Watch, a pro-business lobbying group, tracks the many new money-making schemes cooked up by local governments.

ECONOMIST: How far should regional autonomy go?