广泛分布于地壳各处岩石中的锆石是地球上最古老的矿物之一。
Found in rocks throughout Earth's crust, zircons are some of the oldest bits of mineral on Earth.
人们曾经指望网络广告的指数级增长能拔出石中剑。
The hope had been that exponential growth in online advertising would bring that sword out of the stone.
在蒙大拿大学飞行实验室中，一只石鸡拼命扇动翅膀加速冲上斜坡。
Furiously flapping, a chukar partridge speeds up a ramp at the University of Montana flight lab.
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