百度詞典的意思：
venture
n.[C]
1. 冒險;冒險事業,投機活動
They were the astronauts on the first venture to the moon.
他們是首次登月球探險的宇航員。
2. 投機活動;企業
He has started a joint venture in Singapore.
他已在新加坡辦起壹家合資公司。
vt.
1. 使冒險;冒...之險;拿...冒險
They ventured their lives in exploring the desert.
他們冒了生命危險去沙漠探險。
2. 以...作賭註[(+on)]
He ventured large sums of money on speculative stocks.
他將大筆的錢拿去做股票投機。
3. 大膽提出(或說出);敢於[+to-v][+that]
I venture that you are wrong.
我冒昧說壹句,妳錯了。
No one ventured to speak to him.
無人敢跟他講話。
vi.
1. 冒險;大膽行事[(+on)]
He is too timid to venture upon a new undertaking.
他太膽小,不敢從事新的事業。
The children ventured out on the thin ice and fell through.
孩子們冒險踏上薄冰,結果掉了進去。
這裏應該是對應3.大膽提出(或說出);敢於[+to-v][+that]這個意思