轻土是一个汉语词语，拼音是qīng tǔ，是指松散的泥土。
现在市面上的超轻土 super light weight clay
轻稀土 LREE ; light rare earths
轻质土 LCES ; light textured soil ; lightsoils
轻质混凝土 lightweight concrete ; light weight concrete construction ; [建] light weight concrete ; Light concrete
轻稀土元素 LREE ; light rare earth element
轻松土 light soil
轻混凝土 light concrete
轻粘土 light clay
轻质粘土 soft clay
土壤轻土壤组成的冲积土和沙子。
厚的东西含有更多土更不气，轻的东西含更多气更少土，但所有物质都由这四种要素组成。
The thicker stuff has more earth in it and less air, the lighter stuff has more air in it and less earth, but all matter is made up of these four elements.
防护土堤应用土填筑，不允许使用石块、砖块及混凝土块或者轻而可燃的材料填筑。
The protective earth dike shall be earth-filled. no rock brick and concrete block or light and flammable material shall be allowed for filling.
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