颊窝毒蛇的毒牙是长的空心管子.The fangs of pit vipers are long, hollow tubes.只有四分之一的蛇具有毒液和毒牙.Venom and fangs are found in only a quarter of all known snakes.在蛇的进化史上,毒牙的出现是新的进步.A more recent advance in the evolutionary story of snakes i...
介绍一种简便高效的双阀滤池改造技术.A simple and effective reconstruction technology of the dual - valve filter was introduced.采用双阀机构解决膜吸收过程中膜渗漏问题.The membrane leakage problem is resolved by adopting a dual - valve mechanism during the me...
她那蜡黄的皮肤紧紧地包着脸上的骨头。Her sallow skin was drawn tightly across the bones of her face.她张开双臂，紧紧地拥抱了我。She opened her arms and gave me a big hug.孩子一扭一扭地又想挣脱，他紧紧地抓住了她。He clutched the child tightly as she again tried to wriggle fr...
The squeezed - casting formability of AZ 91 D magnesium alloy in semi - solid state was studied.研究了AZ91D镁合金在不同 半固态 温度下的挤压铸造.It'shows that the formability of steel sheet electrical appliances made by Shougang is quit...
All deck fittings, windows, hatches and doors had been fastened.甲板上所有的装置、窗户、舱口盖和门都已经关牢了。Steamers tooted at us as sailors on deck waved in amusement.汽船向我们嘟嘟鸣笛时，甲板上的水手们饶有趣味地挥着手。This boat has a good deck layout making every...
A pair of orioles alighted on the frisking branch of a weeping willow.一对黄鹂飞落在拂动着的柳树枝条上.Red brick, cornices and corridors, brick Diaolan media , willow down sash.青砖红瓦, 飞檐回廊, 雕栏缕砖,杨柳垂绦.The baskets are woven from strips of ...
The Beatles— I never get tired of listening to them.甲壳虫乐队——我是百听不厌.Tell me if you get tired of driving and we'll change over.如果你开车累了,请告诉我,我们可以换一下位置.The boys will get tired of Ann's blowing hot and cold.男孩子们对于安的出...