octagon
octagon 英 [ˈɒktəgən] 美 [ˈɑktəgɑn]
n. 八边形，八角形
名词复数:octagons
- An octagon is a shape with eight sides. Picture a stop sign, and you'll get the idea.
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- n. 八边形，八角形
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1. Six identical triangles can be formed by drawing two straight lines through an octagon's center point.
经过八角形的中心画两条直线，能够得到六个一样的三角形。
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2. Why It's Innovative: A hydraulic system built into the bridge's handrail allows it to retract and curl into an octagon.
创新点：这座桥的栏杆使用了液压驱动系统，使之能收缩卷曲成八边形。
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3. on the second floor of "The octagon, " the centerpiece of the university's new science and engineering quad that opens later this year — will offer a stark contrast.
未来的图书馆在“八边形”（学校新的科学和工程学四方院落中心的建筑，这个院落今年晚些时候开放）的第二层，它将和传统的图书馆提供一个鲜明的对比。
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