speculative business

基本解释

My personal guess is that they start from a few hundred solar masses, but that's a much more speculative business.
布兰德福德说，“我个人猜想他们是从几百个太阳的质量开始的，但是这种想法太投机了。”
The other is to rein back speculative business lest the phenomenon of converting arbitrage into riches be spread, but, there is no extirpating it.
其次，尽量防止投机性行为，减少通过套戥机会来发财的渠道。但是，我们不可能完全杜绝套戥的机会。
General Motors represented one end of the spectrum - our company was formed from the acquisition of many smaller companies in what was, 95 years ago, a highly speculative business.
通用汽车代表的是其中一个极端：95年前，我们的公司在收购无数小企业的基础上形成，那时，汽车制造还是个高度投机型的产业。

D. from Stanford University's engineering and economic systems department, is less charitable when it comes to companies with speculative business models, especially those carrying a large debt load.
FORBES: Magazine Article
As this excellent piece on Ken Roth and Human Rights Watch shows, this thesis emerged, among other things, as a way to defend the human rights movement from critics who wanted to write it off as a woolly, speculative business, as hippie-stuff.
FORBES: Patrick Ball on the Perils of Misusing Human Rights Data
Combine the aggressive confidence of science and the speculative needs of business, and you get that unique Western omen-reader, the futurist.
FORBES: ARC, the New Digital Magazine for Futurists