冒险做某事 =risk doing
eg. I don't want to take the risk (of) trying this.
我不想冒险去尝试
(=I don't want to risk trying this.)
冒险做某事
He took the risk climbing the big tree.
他冒险爬上了大树
She took the risk of upsetting her parents by helping her boyfriend....
I don't want to take the risk of losing you.