Our finance director warned against putting company reserves into speculative real estate deals.

我們的財務長警告不要把公司的準備金投入高風險的房地產交易。

The bank rejected the loan because the startup's business plan looked too speculative.

銀行拒絕了這筆貸款，因為那家新創公司的營運計畫看起來風險太高。

Several clients lost money after following the broker's advice on speculative tech stocks.

好幾位客戶聽從那位營業員的建議買進高風險科技股後虧了錢。