词性及解释
n.
筛子, 滤网
vt.
筛, 滤
【化】
筛
【医】
筛
词形变化
动词过去式: sieved
过去分词: sieved
现在分词: sieving
第三人称单数: sieves
英英解释
-
1.
n.a strainer for separating lumps from powdered material or grading particles
-
2.
v.distinguish and separate out
[例]
○ sift through the job candidates
-
3.
v.check and sort carefully
常用词组
习惯用语
1.
draw water with a sieve (=pour water into a sieve)
白费气力, 徒劳
2.
have a head [memory] like a sieve
记性糟透了, 健忘
例句
1.
She is sievIng the rice In order to sieve out the stones
她正在把米过筛，好把石头筛出。
2.
A revolving cylindrical sieve used fOR screening OR sizing rock and ORe.
滚筒筛一种圆筒形的可旋转的筛，用于岩石和矿石的筛分或大小测量
3.
Use a trowel, collect the top layer of the sediment. Place the sediment in a sieve and STIR it gently in the water.
用小铲把河床表面的物质铲到金属筛里,将金属筛在水中轻轻转动。
4.
A complex branched carbohydrate commonly associated with sieve areas of sieve elements.
胼胝质一种枝条繁杂的碳水化合物，与筛网原素的筛网区域相配合
5.
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。
6.
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。
7.
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。
8.
A female laborer uses a sieve to separate wheat husks from the grain at a grain market in Amritsar, India, Apr. 16, 2007.
四月十六日，一名女工在印度阿穆瑞莎的榖类市集用筛网过滤麸壳与小麦。
9.
The food - conducting tissue of vascular plants,consisting of sieve tubes,fibers,parenchyma,and sclereids.
韧皮部导管植物的食物传导组织，包括筛管、纤维、薄壁组织和硬化细胞
10.
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。
词汇级别
词汇听力：
小测验：选择正确的单词