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complex dune
desert.	复合沙丘 (指两个或两个以上不同类型的简单沙丘的组合或叠置)
oil	多风向沙丘; 连锁沙丘
tech.	复合沙丘
complex dunes
geogr.	★ 复合型沙丘

complex dune : 11 phrases in 1 subject

Desert science

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