And the reason is clear的意思|示意

But the Armageddon weather report is clear for the next few days at least, and with modern data storage techniques there is no reason not to preserve all of the great works of SF ever written.

但是世界大战的天气预报显示至少以后的一段时间里天气还是晴朗的加上现代的数字存储技术，根本没有理由不保留所有的已完成伟大的科幻小说。

And that's the most important part of the original plan - that the destination is clear; the reason you're on the journey in the first place.

原本计划中最重要的部分在于：清晰地目标以及你踏上旅途的最初目的。

Furthermore, you need to inform users in clear and obvious terms what to do, which is perhaps also a reason why so many road signs in the U.S. include written text.

此外，还需要用清楚、明确的话告诉用户要做什么，这可能是美国有这么多路标中包含文字的原因吧。

It is only through the use of reason that we can achieve clear comprehension and conviction.

只有通过实用理性，我们才能得到清晰的理解和看法。

There is no clear difference in sports motive and the reason to take part in exercise;

参加体育锻炼的原因和动机上无明显差异；

The main reason for great success in any endeavor is clear, specific, and measurable goals written down and backed by a written plan and a burning desire to accomplish them.

伟大成功的背后原因就是明确的目标，它们被写下来，有详细的行动计划，并有实现这些目标的强大动力！