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
I know.
我知道。
This time didn't count. Do it over!
这次不算，重来！
No matter how many guests were present, the great house was always immaculate.
不管去多少宾客，大房子里总是收拾得干干净净。