n.反复无常;
例句:
The inherent factors that decide its multiplication are the features as fission , function inconstancy and rarity.
档案信息的使用特点———裂变性 、 效应不定性和稀缺性是决定档案信息增值的内在因素.
It's inconstancy, but not inability, that's to be feared.
不怕无能, 就怕无恒.
On the other hand, inconstancy often results in failure.
反之, 缺乏恒心常常导致失败.