Investors often speculate on the stock market.

投资者经常在股市上推测。

Until recent years, we could only speculate on what life was like for an unborn baby.

过去，我们只能推测未出生的婴儿是什么样的状态。

In order to speculate on and understand this character, we must begin, as in all things, at the beginning.

为了推测和了解这个人物，我们必须把整个剧情从头来看。

As far as the future is concerned don't speculate on what might happen but imagine what you can make happen.

事关未来时，不要推测可能会发生什么事，要设想你能让什么事发生。

Gates admitted neither are short-term solutions and wouldn't speculate on how long it might last.

盖茨承认说，这两者都无法在短期解决问题，也不愿推测它们将持续多久。

As far as the future is concerned, don't speculate on what might happen, but imagine what you can make happen.

事关未来时，不要推测可能会发生什么事，要设想你能让什么事发生。

It is interesting to speculate on the chemical composition of the solar system at its formation.

同研究化学丰富度有关的一个有趣的问题，是推测太阳系在形成时的化学组成。

In connection with the study of chemical abundances , it is interesting to speculate on the chemical composition of the solar system at its formation .

同研究化学丰富度有关的一个有趣的问题，是推测太阳系在形成时的化学组成。

That said, cosmologists are pushing the limits of mathematical models to speculate on what, if anything, exists beyond our spacetime.

即便如此，宇宙学家正在探索数学模型的极限，来推测什么（如果有的话）存在于我们的时空之外。

This review will focus on cytokine therapy for the prophylaxis and treatment of infections in solid organ transplant recipients, and will speculate on the potential for further advances in the field.

本综述将关注细胞因子疗法对实体器官移植受者感染的预防和治疗，并将推测这一领域的可能的下一步进展。