1. Two ends of the columns were supported with knife-edges and permitted to rotate around strong axes. 柱两端采用单向刀口支座，允许钢柱绕强轴转动。
2. It’s easy to remove them, but it’s best to take a pair of sharp scissors or an Xacto knife to remove any rough edges. 拆卸零件很容易，但最好是用剪刀或Xacto刀（注：美工刻刀的一种）来去除粗糙的边缘...
3. Emily took the cake pan and gently worked a knife around the edges, just as Grandma had no doubt taught her. 埃米莉拿起盛薄饼的平底锅，然后用餐刀轻轻地挑起薄饼的边缘部分——无疑就像奶奶当初教她的那样。
4. Additional edges are added to the model using the knife tool and point selection tags are created. 额外的边缘添加到模型中使用的工具和刀点选择标记创建的。
5. As no one had a knife, he pulled the rubber from his squeegee and used its metal edges to begin cutting. 由于没有人带刀，于是他就剥下橡皮清洁刷上的橡胶磙子，开始用它的金属刃口划开墙体。
