在其它条件相同的情况下，能有效表达自己的人肯定比语言表达能力差的人更容易获得成功。
Other things being equal, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.
颜色在自然界的一些用途仍然未知，但有一件事是肯定的，颜色不仅使我们的星球变得美丽，也是我们的星球得以生存的必要条件。
Some uses of color in nature remain unknown, but one thing is for sure, color not only makes our planet beautiful but it is also necessary for our planet to live on.
除了它荒凉的沙漠条件外，苏丹肯定是世界上最差劲的地方之一。
Along with its bleak desert conditions, Sudan is one of the worst places on the planet.
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