A perennial is a plant that lives indefinitely.多年生植物是指能存活很多年的植物。the perennial problem of water shortage缺水这个老问题I wonder at her perennial youthfulness.我对她青春常驻感到惊讶....
Description: Perennial herbaceous vines, with milky juice , glabrous throughout.形态特徵: 多年生草质藤本, 全体无毛, 有乳汁.Lythrum salicaria is a perennial herb , its root system is a fibrous like tap root system.千屈菜lythrumsalicaria为多年生宿根...
It'serves as a red colorant for glass and glazes.还用作玻璃和釉面的着色剂.Powdered colorant need to keep the paper, or transfer charge.粉末状的着色剂需要使用能够保持或转移电荷的纸张.This paper summarized classification, functions, varieties of colora...
...a bird nestling in the timbers of the roof.栖息于屋顶横梁上的鸟The timbers of similar houses were painted with pitch.类似房屋所用的栋木刷了沥青。Only the finest timbers and veneers are used.只用上好的木料和饰面板。The ship's timbers groaned audibly...
旅客通过入境检查后领取了自己的行李。The passengers went through immigration control and collected their baggage.很多饮酒狂欢的人都是观光客和来一日游的英国旅客。Many of the revellers are tourists and British day-trippers.我们的旅客一路上的行为让人很难解释。Our traveller'sbeha...