perennial相关的词根或词缀是: annenn

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The top four were all in japan , including tokyo as the perennial no. 1 .

前四名都在日本，其中东京常年位居榜首。

This evergreen perennial grows in mounds up to 2 feet tall and 2 feet wide .

这种常绿多年生植物能生长至2英尺高、2英尺宽。

Traffic had already backed up at the east coast 's perennial chokepoint : the interstate 95 toll plaza in newark , del . , Where construction is adding to the bottleneck .

在东海岸的长期的阻塞黑点特拉华州纽瓦克95州际公路的收费处，交通已经堵塞，建筑施工更加重了瓶颈效应。

These perennial visitors to jerusalem fly in from africa in late february , the first harbingers of spring .

这些常年到访者在二月下旬从非洲飞抵耶路撒冷，是预告春天来临的首批使者。

But growth amid global misery does not explain everything : the biggest falls in happiness also occurred in large emerging markets , in indonesia , brazil and-a perennial miseryguts-russia .

但是在全球萧条中呈现出的增长并不能解释所有：幸福感最大的跌落也发生在大的新生的市场，比如印度尼西亚，巴西以及常年苦恼的俄罗斯。