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
We had a unique experience here.
我们在这里获得了宝贵的经验。
Did you go swimming yesterday?
你昨天去游泳了吗？
It is our satellite. It is quite near us in space.
它是我们的卫星。它离我们相当近，仅38万公里远。