Seif dune
赛夫沙丘，蛇形砂丘
🧩 词语组成解析
赛夫沙丘(顺着风向的长沙丘)
dune
[dju:n]
n. （由风吹积成的）沙丘;
🗣️ 情景例句
Chairman Mao said it is necessary to drill as much as possible.
毛主席说，反复操练是非常必要的。
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
The Shaws naturally were a musical family.
肖氏一家天生爱好音乐。