The stars filling the sky were dense and busy. They remained completely still, yet watching them made him think the sky was bustling noisily.
满天的星又密又忙，它们声息全无，而看来只觉得天上热闹。
Researchers trained 11 dogs to stay completely still while images were taken of their brains.
研究人员训练了11条狗，让它们在扫描其大脑图像时保持完全静止。
When you keep your eyeballs completely still observation becomes very clear because the brain is quietened.
当你保持眼球完全静止不动，观察就变得非常清晰，因为头脑安静下来了。
In the meantime, the head should remain completely still, eyes fixed on the ceiling.
但同时，头部的位置仍然应该保持不变，眼睛向上看着屋顶！
In the meantime, the head should remain completely still, eyes fixed on the ceiling.
但同时，头部的位置仍然应该保持不变，眼睛向上看着屋顶！
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