ADJ poorly behaved; lacking good manners 行为拙劣的; 缺少良好的礼貌的
Now you know him, and you know, too, how ill-behaved he is!
现在你认识他了，你也知道他是多么不守规矩！
For while George was a husband and father of earnest strenuousness, the majority of his eight siblings turned out to be a giddy and ill-behaved crew.
尽管乔治是一位诚挚热情的丈夫和父亲，他的八个兄弟姐妹大都是轻率且品行不良。
However, for negative values of x, roughly -4 and lower, the algorithm used to calculate Math.exp is relatively ill-behaved and subject to round-off error.
不过，对于负值的x，一般是- 4以下的数字，用于计算Math . exp的算法表现很差，并且容易出现舍入错误。
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