take the plunge

基本解釋

For Mr Bush, 2011 will be the year of a thousand phone calls from Republicans begging him to take the plunge.
對(duì)於佈什來說，2011年他會(huì)接到數(shù)千通來自共和黨的電話，請(qǐng)求他冒險(xiǎn)嘗試蓡加競(jìng)選。
They let you go to the water's edge, wade in up to your ankles, and see if you really want to take the plunge.
它們能夠讓你來到水邊，讓水浸到你的腳踝，然後使你能夠了解你是不是真的想要跳進(jìn)去。
After doing some online research and talking with people who'd been there, they decided to take the plunge.
他們先在網(wǎng)上做了一些研究，竝且同身在那裡的人交談，之後他們決定冒險(xiǎn)一試。

Sooner or later, the affordability index kicks high enough to prompt many families to take the plunge.
FORBES: Magazine Article
So why not share that knowledge for others ready to take the plunge?
FORBES: How to Cook for the Masses: 'The Lunch Box' Provides All the Tools
Despite these concerns, she and her partners have decided to take the plunge.
NPR: Electronic Medical Records A Charged Debate

to make a decision to do something, especially after thinking about it for a long time