To pass(flour, for example)through a sieve.
筛，筛选用筛子筛选（面粉等）
subsieve fineness
(不能用筛子分析的)亚筛细度
Perforated like a sieve.
筛状的象筛子那样穿有小孔的
This boat leaks like a sieve, ie very badly.
这条船漏得像个筛子.
The bride holds a sieve covered with a silk shawl;
新娘手持一个筛子，筛子上盖有一块丝绸披巾。
Screening separates much of the heavier trash by use of different-sized screens.
许多较重的杂质，经由各种不同的筛子筛除。
If you move I'll riddle you with bullets!
你若动一动,我就用子弹把你打成"筛子"。
Molecular sieve 3A
GB/T10504-19893A分子筛
Systhsis of Nanosized Zeolite NaY and Zeolite Membranes;
纳米NaY型分子筛及分子筛膜的制备
Synthesis of Zeolite ZSM-5 and Zeolite Membranes;
ZSM-5分子筛及分子筛膜的合成
Synthesis of MCM-41 Mesoporous Molecular Sieve and Zeolite Membranes;
MCM-41介孔分子筛及分子筛膜的制备
decationized Y sieve
脱阳离子Y型分子筛
Sand should be screened before you mix it with concrete.
与混凝土混合前,沙子该筛一筛。
Studies on the Activation Process and Separation Ability of Pitch-based Molecular Sieve ACF;
分子筛型PACF活化工艺及筛分性能研究
swinging sieve ion-exchange contactor
摇筛式离子交换接触器
They are sifting the wheat from the chaff.
他们正往外筛麦壳子。
Identification of NDRG2(371) Interaction Proteins;
NDRG2（371）相互作用分子筛选
Synthesis, Characterization and Membrane Reactor Applications of MFI Type Zeolite Membrane;
分子筛膜的制备和新型分子筛膜反应器