为促成一次核爆炸，临界质量必须在一百万分之一秒内聚集在一起。
In order to make a nuclear explosion, the critical mass must come together within a fraction of a millionth of a second.
我们在第二次欧洲和平冥想取得了部分的成功。虽然当天有许多人参与冥想，但是人数远不足以达成临界质量。
Meditation for Europe was a partial success. Although many people participated, we were far from achieving the critical mass.
这一次的事件冥想大获成功，而且参与冥想的人数非常接近临界质量。
Our Event Meditation was a huge success and we were very close to reaching the critical mass.
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