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活到老学到老
#活到老学到老
这说明了什么道理🤔
没有学好数学，没用到抛物线轨迹方程🤪
https://cdn.jellow.site/FpTjk0bh8QbMeg_f0pdvIjd8tDYRv2?imageMogr2/auto-orient/heic-exif/1/format/jpeg/