If the collar won't stay in place, I shall have to pin it back.

如果领子会移动，我就不得不用别针把它别住。

youdao

Take pin threads of NC50 drill collar as an example, Finite Element Method is used to analyze the different stress-relief grooves of pin thread connection.

以NC50型钻铤公螺纹作为研究对象，用有限元方法对加工有不同应力减轻槽的钻铤公螺纹接头进行了分析计算。

youdao

Wearing the pin of an active serviceman's mother on her collar, Mrs Palin beamed with pride about her son and nephew's current service in the military and worked in a few shots at the Democratic presidential nominee's past gaffe about small town folks whose frustrations with life cause them to cling to guns and Bibles.

BBC: Republican Convention diary