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.
對于布什來說，2011年他會接到數(shù)千通來自共和黨的電話，請求他冒險嘗試參加競選。
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，然后使你能夠了解你是不是真的想要跳進去。
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，并且同身在那里的人交談，之后他們決定冒險一試。

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