前间 meaning in Chinese
maema
Examples
- The bullet cluster is more than three thousand million light - years away . it formed in the last one hundred million years
子弹状星系团距离地球超过30亿光年。它形成于一亿年前间。 - Radioactive dating showed the crystals from western australia varied in age from 3 . 06billion to 4 . 25billion years ， making them almost 1billion years older than the previous oldest - knowndiamonds
放射性断代测出来自澳大利亚西部的这种晶体在30 . 6亿到42 . 5亿年前间发生变化，这比之前已知最古老的钻石还早10亿年左右。