第8章 泰勒斯小课堂（1 / 2）
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sOS4gOWumueoi+W6pueahOi9rOWMlu+8jOS7juiAjOWcqOeJqeeQhuWxgumdouaSrOWKqOS4h+acieW8leWKm+OAgeeUteejgeWKm++8jOS7peWPiuW8uuOAgeW8seebuOS6kuS9nOeUqOWKm+OAgui/meS5n+aYr+i2heWHoeWKm+mHj+acgOW4uOingeeahOi/kOeUqOaWueW8j+OAguKAnQ08L3A+