a pair of shears
指这种类似剪刀但更大的切割工具时，通常用复数 shears，计数时借助 a pair of。
She trimmed the bushes with a pair of shears.
她用一把大剪刀修剪灌木。
大剪刀
shears — plural of shear
剪板机；剪切机；剪切；剪下的东西；风切变；剪切变形；切变；剪切力；切应力
a cutting tool like scissors, but usually larger
常作复数 shears
类似剪刀但通常更大的切割工具。
A cutting tool similar to scissors, but often larger.
(物理学)物体中平行面保持平行但沿自身方向平移的形变
(physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves
用于切割金属板的大型机器。
A large machine use for cutting sheet metal.
通过刀片切割金属板的大型刃具
a large edge tool that cuts sheet metal by passing a blade through it
剪切的行为,或被剪切下的东西。
The act of shearing, or something removed by shearing.
朝相反方向推动的力。
Forces that push in opposite directions.
风切变现象。
The phenomenon of wind shear.
风切变的具体实例。
A specific instance of wind shear.
一种变换,使每个点沿平行于某给定直线的方向移动,位移距离与该点到直线的距离成正比。
A transformation that displaces every point in a direction parallel to some given line by a distance proportional to the point's distance from the line.
岩石对应变的响应,通常由压应力引起,产生特定结构。
The response of a rock to deformation usually by compressive stress, resulting in particular textures.
The bridge collapsed due to shear stress in the steel beams.
这座桥因钢梁中的剪切应力而坍塌。
用法提示：此句中的“shear”为名词，指材料内部平行面相对滑动的物理变形。
AI contextual example
She trimmed the hedge with a pair of garden shears.
她用一把园艺剪刀修剪树篱。
用法提示：此句中的“shears”为名词复数形式，指一种切割工具。
AI contextual example
The earthquake generated large shear forces in the ground.
地震在地面中产生了巨大的剪切力。
用法提示：此句中的“shear”为名词，修饰“forces”，表示平行方向上的力。
AI contextual example
指这种类似剪刀但更大的切割工具时，通常用复数 shears，计数时借助 a pair of。
She trimmed the bushes with a pair of shears.
她用一把大剪刀修剪灌木。
shear 可直接放在另一个名词前作修饰语，构成 shear stress、shear force 等技术术语。
The engineers calculated the shear stress on the beam.
工程师计算了梁上的剪应力。
表示物体受到剪切力作用时，常用 under shear 这一结构。
The bolt failed under shear.
螺栓在剪切力作用下断裂。
grammar · medium
易错句子Could you hand me that shear?
正确表达Could you hand me those shears?
表示“大剪刀”这类切割工具时，shear 只用复数形式 shears；要指一把工具应说 a pair of shears。单数 shear 不能表示这件工具，A 项错在把不可用单数的工具名词当成普通可数单数。
grammar · medium
易错句子He often shears his notes with classmates.
正确表达He often shares his notes with classmates.
表示“分享”必须用 share /ʃer/，而 shear /ʃɪr/ 表示“剪切”，两词词形与读音都不同，不能互换；此处语义是分享笔记，只能用 share。
风切变
The plane hit severe wind shear during its descent.
飞机下降时遭遇了强烈的风切变。
剪应力
Engineers calculated the shear stress on the steel beam.
工程师计算了钢梁上的剪应力。
剪力
The shear force at the joint exceeded the design limit.
接合处的剪力超过了设计限值。
抗剪强度
Wet soil loses much of its shear strength.
潮湿的土壤会丧失大部分抗剪强度。
剪切波
A shear wave travels more slowly than a compression wave.
剪切波传播得比压缩波慢。
一把大剪刀
He trimmed the hedge with a pair of shears.
他用一把大剪刀修剪树篱。
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