他因使用消毒不当的注射针头而感染了艾滋病。He had become infected with Aids from an improperly sterilised needle.有些药店在配发顺势疗法的药物时给出了错误或不当的建议。Some shops gave wrong or inadequate advice when dispensing homeopathic medicines.但时至今日, "彻内里"案的例外仍属罕见,...

“不当的”的英语可以翻译为：[法] undue，unwarrantable，unmerited ...