1·Overall, these reports are mere speculation.
总体来看，这些报道更多的是猜测。
2·Without more research, the function of HAR1 remains mere speculation.
由于缺乏进一步的研究，HAR1的功能仅仅是一种推测。
3·I must emphasize that these ideas are NOT mere speculation. We know they can work.
我必须强调指出，这些想法不仅是单纯的设想，它们确实是行之有效的。
4·This might not seem a big deal, but it is the first time science has proved what was hitherto mere speculation: that the brain, when dreaming, behaves like the brain when awake.
结果看起来并不是什么大事，但是这是科学上第一次证明了目前的猜想：大脑做梦时和清醒时的行为相像。
5·It can be used as a pause or a colon: very handy for spinning out a mere anecdote into a playlet that's full of parody and speculation.
这个词可以作为停顿或冒号：将一件小事渲染成充斥着滑稽模仿和揣测的短剧时，这个词用起来很方便。