好词典

shear

UK //ʃɪər//US //ʃɪr//

词源

源自古英语 'sceran',意为'切割',与古高地德语 'sceran' 和古诺尔斯语 'skera' 同源,最终源自原始日耳曼语词根 *sker-。

verb

❶ 用剪刀或类似工具剪断或修剪,常用于描述剪羊毛、剪头发或修剪植物等动作。

“The farmer shears the sheep every spring.”

(农民每年春天都会给羊剪毛。)

“She sheared off the damaged branches from the tree.”

(她剪掉了树上受损的树枝。)

❶ 因外力作用而断裂或剥离,通常指物体因压力或剪切力而突然分开。

“The bolt sheared off under the heavy load.”

(螺栓在重压下断裂了。)

“The earthquake caused the cliff to shear away from the mountain.”

(地震导致悬崖从山体上剥离。)

同义词:cut, trim, clip, sever, slice

noun

❶ 剪切工具,如大剪刀或剪羊毛的专用工具,也指剪切的动作或过程。

“He bought a new pair of shears for the garden.”

(他为花园买了一把新的大剪刀。)

“The sheep's wool was collected after the shear.”

(剪完羊毛后,羊的毛被收集起来。)

❶ 剪切力,指使物体两部分沿平行方向相对滑动的力,常见于工程或物理学中。

“The bridge was designed to withstand high shear forces.”

(这座桥的设计能够承受高剪切力。)

“Shear stress can cause materials to deform.”

(剪切应力会导致材料变形。)

同义词:scissors, clippers, cutting tool, shearing force

常见短语

shear off — 指某物因外力作用而突然断裂或分离,常用于描述机械或自然现象。

“The wing of the plane sheared off during the crash.”

(飞机的机翼在坠毁时断裂了。)

shear strength — 材料抵抗剪切力的能力,是工程和材料科学中的重要性能指标。

“This alloy has excellent shear strength.”

(这种合金具有极佳的抗剪强度。)