单词	parallelogram
释义	parallelogramparallelogram /ˌpærəˈlɛləˌgræm/ noun [countable] math, geometry a flat shape with four sides in which each side is parallel to the side opposite to it, but not necessarily the same length
随便看	rip riparian ripcord rip current ripe ripen ripeness rip-off riposte ripped ripple rip-roaring rise riser risibility risible rising risk risk assessment riskily riskiness risk management risk-taker risk-taking risky

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