Over-stimulate them and some will continue responding for a couple of seconds after the stimulus is removed.
受到过度刺激的视网膜细胞，部分在刺激后持续反应。
2
Avoid using alcohol or irritating skin care products and other cosmetics with unknown contents, so as not to over-stimulate the production of melanin.
避免使用含酒精或刺激性保养品及其它成分不明的化妆品，以免过度刺激产生黑色素。
3
One was that the rapid scene changes common to many TV programs may overstimulate the developing brain of a young child, and could make reality seem boring by comparison.