It is not at all clear why the costs of serving a highly loyal customer should in principle be different from those of serving any other type of repeat customer.

为什么服务一个高度忠诚的顾客的成本原则上与服务其他类型的回头客的成本是不同的，这一点完全不清楚。

youdao

It is my job to make sure that all pathways are clear of obstructions.

保证所有的道路通畅是我的职责。

《牛津词典》

There will probably be months of legal tussling, and it is not at all clear which side will prevail in court, nor in the battle for public opinion and legislative favor.

这场法律角逐可能会耗上好几个月的时间，哪一方在法庭占上风，哪一方又会赢得公众舆论和立法者的青睐都尚不可知。

youdao

"It's not at all clear that if you took the same bill back to the House today that it would pass.

VOA: standard.2010.02.25

First of all, it's clear from the Pythagoras' theorem that a is the square root of ^2 + ^2.

首先,根据毕达哥拉斯定理,勾股定理在西方被称为"毕达哥拉斯定理"

耶鲁公开课 - 基础物理课程节选

It's by no means clear that The Rhyme of the Ancient Mariner will end with "Love all things, great and small things."

大家不可能清楚的预见到《古航海家之歌》,会以“爱所有事物，不管它伟大或渺小“结尾“

耶鲁公开课 - 文学理论导论课程节选

But the view from a parade float makes it clear why it all happens.

FORBES: The Business of Mardi Gras

The company promised to have the silicon ready in two years' time, but when 2008 rolled around, it was clear that all it was prepared to release was a series of roadmap slides.

ENGADGET: HP Pavilion dm1z (with AMD Fusion) review

But it's clear from the Washington Post series - and I think it was clear even before we saw it all pulled together in this series - that Dick Cheney was, if you will, the first among equals.

NPR: 'Washington Post' Series Focuses on Cheney