但是研究人员表示，对于了解电动游戏是否会成瘾，这已经迈出了关键的第一步。
But they say it is a crucial first step in understanding whether video games could be addictive.
我们的研究代表我们向快速检测三聚氰胺的目标迈出了重要的一步，这将解决一个关键的全球性问题。
Our work represents a significant step towards the rapid detection of melamine, which addresses a critical global issue.
周一，两名同外部世界隔离了8个月之久的志愿者在模拟火星上迈出了第一步，进而让这个关于火星旅行的实验到达了关键性的中间点。
Two volunteers cut off from the rest world for eight months stepped out on a mock-up of Mars on Monday, reaching the dramatic half-way point of their experimental "voyage" to the Red Planet.
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