压制黑暗宣传，以达到把冲突扼杀在萌芽中的目的，这会有很大益处。
Nipping conflict in the bud by silencing dark propaganda would do a lot of good.
火星500实验，如果像一些专家所深信不疑的那样，主要目的是宣传人类飞往那颗红色星球的概念，那么它已经确定无疑超越了所有人预期成功地达到了目的。
If, as some experts believe, the main aim of the Mars 500 experiment is to publicise the concept of human flight to the red planet, then it has surely succeeded beyond all expectations.
他说，重要的是要弄明白这些人为什么以及什么时候感染艾滋病的，这样公共卫生宣传运动才能更有的放矢，以达到预防感染的目的。
He says it is important to understand why and when these people are becoming infected. That way public health campaigns can be better targeted to prevent such infections.
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