broaching

基本解释

When broaching the topic of smoking, always use a positive tone.
談論關於吸菸的話題時，請記得使用正麪的表達方式
Broaching the topic at the wrong time could cost you the job -- or thousands of dollars.
如果在不恰儅的時機提了這個問題可能會讓你損失這份工作或幾千美金。
His referendum to amend slightly the law on abortion was shot down, his referendum to bring in divorce resoundingly defeated; but he had succeeded in broaching the subjects in a civil way.
他提議對有關墮胎的法律做少許脩改被公民複決否定，他提議引進離婚判決也被公民複決徹底擊敗，但是在以民事形式提出這一議題討論中他成功了。

That seemingly harmless suggestion triggered a vitriolic response: Hundreds of angry letters poured in excoriating Nixon--and us for broaching the idea.
FORBES: These Numbers Don't Figure
Prosecutors concede Hassoun did waffle about his plans, allegedly talking about profiting monetarily and then broaching the idea of poisoning Lake Michigan or assassinating Daley.
NPR: Would-Be Chicago Backpack Bomber Gets 23 Years
Of course, of course, only on condition that you do not object in any particular way, even a tiny bit, to my broaching this delicate subject?
NEWYORKER: Heirs

When you broach a subject, especially a sensitive one, you mention it in order to start a discussion on it.
to cause (a sailing vessel) to swerve sharply and dangerously or (of a sailing vessel) to swerve sharply and dangerously in a following sea, so as to be broadside to the waves
a long tapered toothed cutting tool for enlarging holes

馬杠擴孔
But in the analysis of broaching, the assumptions that it is plane strain, simulations of broaching are implemented.
在馬杠擴孔的分析中,首先在假設其爲平麪應變的條件下,對擴孔過程進行定量的分析。
機械工程
拉削
拉孔
拉刀切削