Grammar Note
作不可数名词时指物理上的剪切变形；作可数名词（常用复数）指剪切金属板的工具。
大剪刀
shears — plural of shear
先理解核心含义，再看它在真实句子里的用法。
大剪刀
a cutting tool like scissors, but usually larger
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。
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
She trimmed the hedge with a pair of garden shears.
她用一把园艺剪刀修剪树篱。
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。
AI contextual example
the shear changed the quadrilateral into a parallelogram
剪切使四边形变成了平行四边形
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作不可数名词时指物理上的剪切变形；作可数名词（常用复数）指剪切金属板的工具。
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.