We often shake flour through a sieve.是什么意思？

We often shake flour through a sieve.

我们经常用筛子筛面粉。

we

pron. 我们，咱们，笔者，本人，朕，人们；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

shake

vt. 动摇，摇头，使发抖，使心绪不宁[烦恼，惊吓]；vi. 摇（出），抖（掉），握手，（嗓音）颤抖；n. 摇动，震动，哆嗦，混合饮料；

例句
...a man with more medals than you can shake a stick at.
拥有很多奖章的人

flour

n. 面粉；vt. 撒上粉；

例句
Commercial flour is bleached artificially.
市面上的面粉是经过人工漂白的。

through

prep. 通过，穿过，经由，透过，凭借；adv. 从头到尾，彻底，自始至终；adj. （电话）接通，通话完毕，有洞的，直达的；

例句
The proposal was instantly voted through with two to one in favour, accompanied by enthusiastic applause...
在热烈的掌声中，提案以2比1的优势很快通过了表决。

sieve

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；

例句
It is worth taking the trouble to sieve the fruit by hand…
值得费点劲用手挑挑果子。