hinge
/hɪndʒ/📚 12909 33 1六级考研托福雅思A hinge is a piece of metal, wood, or plastic that is used to join a door to its frame or to join two things together so that one of them can swing freely. 折叶
noun [专属名词]铰链，合叶；枢纽，关键；铰合部
The top swung open on well-oiled hinges.
盖子在上好油的折叶上一下子弹开了。
verb [vt. 及物动词]给（某物）装铰链
By varying the width of the black lines, or hinges, researchers are able to change how far each hinge folds.
通过改变黑色线条或者铰链的宽度，研究员可以改变每条铰链可以折叠的范围。
“很紧” → 铰链很紧， 转不动 → 铰链
单词造句:
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- The wider the hinge, the further it folds. 铰链角度越大，它能折的距离越远。
- The door had been pulled off its hinges. 门从铰链上扯下来了。