中文翻译与英英解释 | reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
同义词：light reflex, pupillary reflex, myosis,
| | (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
同义词：meiosis, reduction division,
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