单词	perfect square
释义	perfect square noun : an integer (such as 9 or 36) whose square root is an integer Example Sentences Recent Examples on the Web Chin frames up another perfect square in a seasonal ice cave that forms on the Athabasca Glacier. Grayson Schaffer, Outside Online, 14 May 2015 The perfect square of frozen American cheese, bright, plasticky yellow circles of egg-cornstarch-milk patties—is this Lego food? Alex Beggs, Bon Appétit, 7 Oct. 2021 That outgoing 256-game schedule a perfect square, just as 16 is. Nate Davis, USA TODAY, 13 May 2021 Greengrass captures the two of them outside the house, viewed through a window that frames them in a near-perfect square. Chris Hewitt, Star Tribune, 11 Jan. 2021 The units digit of a perfect square can only be 0, 1, 4, 5, 6 or 9. Quanta Magazine, 18 Nov. 2020 Find a perfect square, all of whose digits are in the set {2, 3, 7, 8}. Quanta Magazine, 18 Nov. 2020 Use the plastic and metal presses to form indents for fillings and create the perfect square shape. Popular Science, 6 Aug. 2020 This is because perfect squares are never negative: Squaring a positive or negative integer always results in a positive integer. Quanta Magazine, 5 Nov. 2019 See More Word History First Known Use 1811, in the meaning defined above
随便看	bellota bellote bellow bellowed bellowers draw parallels between draw pin draw play draw poker draw press draw runner draw shot draw slip draw step draw straws draw table draw taper draw the blinds on draw the blinds/curtain/shades on draw the curtain on draw the line draw the shades on draw to a close draw to a halt draw to a halt/stop

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