演员武器和道具上都用有反射的点来标记当他们移动时摄像机网格只跟拍点的移动。
Actors, weapons and props marked with reflective dots move around the stage while the camera grid tracks only the dots.
科比和考芙首先对一群大鼠新生3天的神经元进行标记，接着在两周后让这些大鼠建立了一个恐惧性条件反射。
Kirby and Kaufer labeled hippocampal cells created over a three-day period in a group of rats, and then conditioned a fear response in these rats two weeks later.
通过测量光线从光合作用细胞反射后遗留下来的光子标记，天文学家们可能很快就能拥有一种新的探测外星生命的工具了。
By measuring the photon signatures left when light bounces off photosynthesizing cells, astronomers may soon have a new tool for detecting extraterrestrial organisms.
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