- not even or regular in pattern or movement; unpredictable不稳定的; 不规则的; 无法预言的, 变化无常的：
her breathing was erratic.
她呼吸不均匀。
(亦作 erratic block 或 boulder)
- Geology a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action【地质】漂块, 漂砾。
派生词
erratically
adverberraticism
noun词源
late Middle English: from Old French erratique, from Latin erraticus, from errare 'to stray, err'.