It is obvious that the cat doesn't like the bone.
很明显，这只猫并不喜欢吃骨头。


Most ski resorts are in hilly countries, for obvious reasons.
许多滑雪胜地是在多山的国家，原因很明显。


tendency 是根据 tend 变化而来的，表示趋向、趋势， trend 也表示趋势，他们的细微区别如下： trend 指事物开展总的方向、倾向或趋势。
tendency 比 trend 更抽象，一般指固有或习得的倾向性，强调没有外来的影响或干扰。 determining tendency 决定性趋势
例句： The tendency of today's young people to marry and bear children at late ages is very obvious in China .
在中国，年轻人晚婚晚育的趋势越来越明显。

One obvious impact is the radical alteration of the land surface.

一种显而易见的影响是大地表面剧烈的改变。

In this example, the contradiction is obvious.

在这个例子中，矛盾是明显的。

※There are obviously two educations. One should teach us how to make a living and the other how to live. 教育显然有两种∶一种是教人怎样谋生，另一种是教人怎样生活。
※All great truths are obvious truths. But not all obvious truths are great truths. 伟大的真理都是明摆着的事实.但不见得所有明摆着的事实都是伟大的真理.