n. 1.(细眼)筛。 2.(约装一 bushel 的)粗筐。 3.〔比喻〕嘴松的人，守不住秘密的人，嘴不严的人。 短语和例子 a head [memory] like a sieve 记性糟透了。 draw water with a sieve＝pour water into a sieve 白费气力，徒劳。 as leaky as a sieve 嘴松，容易泄漏秘密。 vt. 筛，筛选。
a strainer for separating lumps from powdered material or grading particles 同义词：screen,
distinguish and separate out; "sift through the job candidates" 同义词：sift,
separate by passing through a sieve or other straining device to separate out coarser elements; "sift the flour" 同义词：sift, strain,
check and sort carefully; "sift the information" 同义词：sift,
examine in order to test suitability; "screen these samples"; "screen the job applicants" 同义词：screen, screen out, sort,
A sieve, or sifter, is a device for separating wanted elements from unwanted material, typically using a woven screen such as a mesh or net. The word "sift" derives from 'sieve'.
例句与用法
1.
Finally , it is like drawing water with a sieve . 竹篮打水一场空。
2.
The student has a memory [head] like a sieve ... 这个学生很健忘。
3.
She drained the water out through a sieve . 她用漏杓把水控出去。
4.
A special case of this mechanism is the so-called sieve effect . 这个机理的特殊情况就是所谓的筛分效应。
5.
Dinitropheol exerted its effect on sucrose uptake or secretion into the sieve tubes . 二硝基酚影响蔗糖的吸收或者分化到筛管里。
6.
The pollen can then be separated from the rest of the catkin by sieving through cheesecloth or fine screen . 以粗纱布或细筛过筛，便可将花粉同雄花序的其它部分分开。
7.
Sieve diameter is the length of the side of a square sieve opening through which the given particle will just pass . “筛析粒径”是指一个四方筛孔的边长，某已知的颗粒将恰好通过这筛孔。
8.
I have a sieve . ah , screw it . - who uses this -我有滤筛。 。 。算了-谁用过这个？
9.
We can separate the stones out with a sieve 我们可以用一个筛子把石头分离出来。
10.
Experimental study of vertical sieve tray separator 垂直筛板型除沫器的实验研究
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