(informal)stop or refrain from talking
(非正式)不吭声，住嘴
(informal)initiate an action or train of events (often used to refer to the ease with which a nuclear war might be started)
(非正式)发动（事件）（常用来形容发动核战争多么容易）
(informal)arouse or provoke a reaction of someone
(非正式)引起反应
don't allow co-workers to push your buttons.
别让你的同事牵着你的鼻子走。
(informal)complete or conclude something satisfactorily
(非正式)圆满结束
trying to button up a deal.
试图做成一笔交易。
[often as adj. buttoned]repress or contain something
压制（或控制）的
it was repressive enough to keep public opinion buttoned up.
弹压民意真是太专制了。
Exactly; precisely.
准确；确切