A bottle opener, door hinge, and stapler are all examples of third class levers.
开瓶器、门铰链和订书机都是第三类杠杆的例子。
Door hinge
原声例句
Reel知识卷轴
六级晨读美文
" I put my all range full range door hinge in storage and ate porridge with George" .
“我把我的全系列全系列门铰链存放起来，和乔治一起吃粥”。
5C
Yeah, I think it's quite common for door hinges to become rusty, especially in a damp environment like Zhuhai.
是的， 我认为门铰链生锈是很常见的，尤其是在珠海这样潮湿的环境中。
5C
Yeah I think it's quite common for door hinges to become rusty , especially in a damp environment like Zhuhai.
1：是的， 我认为门铰链生锈是很常见的，尤其是在珠海这样潮湿的环境中。
中文百科
铰链 Hinge
（重定向自Door hinge）
铰链（英: hinge），又称合页,是用来连接两个固体，并允许两者之间做转动的机械装置。铰链可能由可移动的组件构成，或者由可折叠的材料构成。最常见的是门窗上安装的铰链。
英语百科
Hinge 铰链
（重定向自Door hinge）
A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges like the elbow joint.