单词：arithmetic series
arithmetic series的用法和样例：
例句
- Subsistence only increases in an arithmetic ratio.生活资料只能按算术级数增长。
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approximate 近似的，近似 April 四月 arbitrary 随心所欲的，专断的 architect 建筑师 architecture 建筑学，家住式样 area 面积，地区，领域 argue 争论 argument 争论，辩论，理由 arise 发生，起来，出现 ar
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[0:0]arithmetic arouse arrange算术 引起,唤起 安排,准备 [0:37.8094]arrest artificial artistic aspect逮捕,拘留 人工的,人造的 艺术的,美术的 方面,面貌 [1:31.0307]assemble assembly assess asset混合,聚集 立法机构,议会 对...估价 人价值的,优点 [2:22.6436]as
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New Words 新单词 concrete adj. 具体的 addition n. 加 subtraction n. 减 multiplication n. 乘 division n. 除 frequently adv. 频仍地 withdraw v. 掏出 formula n. 公式，程式 plus prep. 加 minus prep. 减 compound v. 合成 times n. 倍
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arithmetic n.算术；计算 We learn arithmetic right after we enter kindergarten. 我们进幼稚园后就开始学算术了。 When it comes to doing arithmetic, Mark is a genius. 说到做算术，马克是天才。 postpone vt.延期，延缓 Be
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