他一直被那些指控他有不正当商业行为的说法所困扰。He has been dogged by allegations of questionable business practices.她可能会向当税务稽查员的哥哥揭发他那些不正当的交易。She might expose his crooked business deals to her tax inspector brother.那次偷袭是一种不正当的侵略行径。The raid was...

“不正当”的拼音为：bù zhèng dāng...

“不正当”的英语可以翻译为：improper，illegitimate，dishonest，devious，malfeasance ...