Sieve problem
[计] 问题
🧩 词语组成解析
sieve
[sɪv]
n. [粮食][矿]筛子;滤网;不能保守秘密的人，嘴不严的人;
v. 筛，筛选;滤;
🗣️ 情景例句
I maintain that the most important thing is having good friends.
我认为最重要的是有好朋友。
Could you hold your questions until I've finished?
请你把你的问题留到我把事情做完再问好吗？
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。