The isotopic signatures of most ancient limestones indicated the same process.大多数古代石灰岩的同位素特征说明了同样的过程.There are four principal types of limestones.石灰岩有四种主要类型.Soil: Altitude 260 meters, southeast orientation . Limestone gr...

Tombstones jutted out of the ground in broken clusters.墓碑三三两两地竖立在地面上。All that money for tombstones!所有这些花在墓碑上的钱都是白费了!The skull - and - crossbones crudely carved on the first tombstones was replaced by a winged cherub.最初粗糙...

The incidence of gallstones increases progressively with age.胆石症的发病率随年龄而逐渐增高.Objective To evaluate collodion - enhancing technique for thin paraffin sections of the gallstones.目的:评估火棉胶增强技术在胆囊结石切片中的应用.Gallstones are forme...

The fossils at Dinosaur Cove are embedded in hard sandstones.恐龙峡谷中的化石都嵌在坚硬的砂岩中。Alternating sandstones and shales are regarded as important.蚀变的砂岩和页岩是很重要的.The coarsest sandstones intercalated with grey mudstones.最粗粒砂岩与灰色泥岩...

Gallstones usually form in the gall bladder.胆石通常是在胆囊中形成的.Gallstones are formed from the constituents of bile.胆石症是由胆汁的成分形成的.The incidence of gallstones increases progressively with age.胆石症的发病率随年龄而逐渐增高....

limestones的音标：...