But it may also turn its attention outward, the researchers argue, and notice, say, a pattern in animal tracks that was previously hidden.

研究者认为，大脑也可能将注意力指向外部，比如说，大脑注意到此前隐蔽的属于动物王国的那种模式。

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It tracks illegal unregistered aircraft, so called ghost planes, delivering arms and picking up precious minerals at air-strips hidden in the Congolese jungle.

它对非法注册的所谓的“魔鬼飞机”进行追踪，这种飞机运送武器并且运输安放在刚果的灌木丛中的飞机跑道之间的宝贵矿物。

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With a hidden OLED display, the device tells time, counts your steps, computes the number of calories you've burned, and tracks your heart rate.

魅族手环使用隐藏的OLED显示屏，设备会显示时间，计算您的步数，计算您所燃烧的卡路里的数量，并跟踪您的心率。

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Winehouse was eligible as a result of the album Lioness: Hidden Treasures, which compiled rare material, unreleased tracks and alternative recordings after her death in 2011.

BBC: Brit Awards: Emeli Sande leads nominations

His Warrior was following 15 other vehicles in established tracks to reduce the risk of hitting a hidden bomb.

BBC: Pte Richard Hunt