also swallow-tail, 1540s as a type of arrowhead, from swallow (n.1) + tail (n.). Of a type of butterfly, by 1776; of a type of coat, 1835. As an adjective from 1590s. The bird's tail is long and deeply forked.
实用例句
1. A magnified shot shows the head of a tiger swallowtail butterfly larva.
这个放大的照片显示一只凶猛风蝶幼虫的头部.
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2. At end of scale , one of the largest swallowtail butterflies lives in Jamaica.
说到最大的生物, 牙买加就生活着世界上最大的燕尾蝶中的一种.
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3. Researchers at the University of Cambridge studied an Indonesian butterfly known as the peacock or swallowtail.
剑桥大学的科学家研究了一种被称为“孔雀”或“凤蝶”的印度尼西亚蝴蝶.
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4. The results indicate that flashover in building fires is a phenomenon of swallowtail catastrophe.
