septemdecimal 的詞源
septemdecimal(adj.)
"十七年的",1855年,最初並通常指蟬,源自拉丁語 septemdecim "十七"(見 seven, ten)+ -al(1)。相關: Septemdecimally。 Septemdecenary "每17年發生一次",也指蟬,最早見於1843年(在威廉·柯比和威廉·斯彭斯的《昆蟲學導論》中,這是一份詞源學/昆蟲學聯繫的報告)。
They never descend very deeply into the earth, but remain about the tender fibres of the roots. The only change they appear to undergo in their subterranean pilgrimage of seventeen long years is increase of size. As the time of their transformation approaches, they rise to near the surface of the earth, form cemented cells, in which they pass their pupa state, after which they burst the skin on the back and ascend the first tree, and again perform their septemdecimal offices of generation. [John Hooper, report on the seventeen-year locust, in "Annual Report of the American Institute," New York, 1855]
它們從不深入地下,而是留在根的嫩纖維周圍。它們在十七年的地下旅程中似乎唯一經歷的變化是體積的增加。當它們變形的時間接近時,它們升到地表附近,形成膠合細胞,在其中度過蛹期,之後它們在背部爆裂皮膚,攀上第一棵樹,再次執行它們的十七年一次的繁殖任務。[約翰·胡珀(John Hooper),關於十七年蟬的報告,《美國學會年報》,紐約,1855年]
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