（六）放射性同位素，是指化学元素中具有相同原子序数，但质量不同且能发生放射性衰变的核素。
▲ 附上地址：https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-image-preview
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临走时，王嫂接了个电话，对方询问是否还有山姆的鲜牛奶，王嫂说已经卖完，明天会到新货。门口的塑料门帘被风掀开一下，又落下去，外面是春节里皖北城市常见的灰白天色，街边店铺的红灯笼还挂着。
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Phil Collins, Oasis, Pink and Shakira are among the stars who have been nominated for inclusion in the Rock & Roll Hall of Fame this year.
There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:，推荐阅读谷歌浏览器【最新下载地址】获取更多信息