副词短语
中文翻译：很久以后
同义词：
['after a long time', 'for a long time', "for ages例句：1. I'll be back long after you finish your homework.（我等你做完作业后才会回来。）"]
例句：
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1. I'll be back long after you finish your homework.
我等你做完作业后才会回来。
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2. She had been away long after he left home.
他离开家后，她已经离开了好长时间。
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3.They have been friends for a long time now.
他们现在已经是好朋友很久了。