However, up to now, we have still lacked the positive analysis on the practical course.
然而，学界一直缺乏对它具体过程的细致的实证的考察分析。
However, I now realize the chance to make up for that big loss has disappeared.
然而，现在我意识到，这个弥补心中遗憾的机会已经永远不存在了，一切都已经晚了。
Up to now, however, practical magnetic energy product is more lower than it.
然而目前所获得的实际材料的磁能积远低于理论计算值。
However, up to now, I realize that I was wrong.
不过，到现在为止，我知道我错了。
However, up to now, I realize that I was wrong.
不过，到现在为止，我知道我错了。
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