1. 不正当的;非法的
Improper activities are illegal or dishonest.
e.g. 25 officers were investigated following allegations of improper conduct during the murder inquiry...
25 名警察在被指控于调查谋杀案期间有非法行为之后受到调查。
e.g. Mr Matthews maintained that he had done nothing improper.
马修斯先生坚称他没有做过非法的事情。
improperlyI acted neither fraudulently nor improperly.
我既没有欺诈也没有犯法。
2. 不合适的;不适当的
Improper conditions or methods of treatment are not suitable or good enough for a particular purpose.
e.g. The improper use of medicine could lead to severe adverse reactions.
用药不当会产生严重的不良反应。
improperlyThe study confirmed many reports that doctors were improperly trained...
该调查证实了许多关于医生未接受充分培训的报道。
He had become infected with Aids from an improperly sterilised needle.
他因使用消毒不当的注射针头而感染了艾滋病。
3. 不成体统的;不得体的
If you describe someone's behaviour as improper, you mean that it is rude or shocking.
e.g. He would never be improper, he is always the perfect gentleman.
他总是举止得体,一直是个完美的绅士。
improperlyFundamentalist groups have attacked women they regarded as improperly dressed.
原教旨主义团体严厉抨击那些他们认为穿着不得体的女性。