... 漏节（阔叶圆木） empty knot(hardwood log ) 圆形节 round knot 圆形节（椭圆形节） round knot(oval knot) ...
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他们是半圆形或节段性和方形计划不同的是哥特式拱顶通常是长方形。
They are semi-circular or segmental and on a square plan, unlike the Gothic vault which is frequently rectangular.
吉布斯听总参谋长拉姆·伊曼纽尔作为奥巴马内容的文件在白宫椭圆形办公室的圣帕·特里克节。
Gibbs listens to Chief of Staff Rahm Emanuel as Obama reads a document in the Oval Office on St. Patrick's Day.
但是，第一节课的快下课了，我无奈的发现，我只剩下了一个方楔子和一个圆形小钉板。
And yet, in the period between first recess and orange juice time, I had faced the bitter reality that all that was left was a square peg and a round hole.
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