con·com·i·tant
adjective/kənˈkɒmɪtənt/
/kənˈkɑːmɪtənt/
(formal)- happening at the same time as something else, especially because one thing is related to or causes the other
（尤指相关联的或有因果关系的事）同时发生的，伴随的，相伴的 - an increase in student numbers and the concomitant increase in class size
学生人数的增加以及随之而来的班级规模的增加
Oxford Collocations DictionaryConcomitant is used with these nouns:- increase
- rise
Word Originearly 17th cent.: from late Latin concomitant- ‘accompanying’, from concomitari, from con- ‘together with’ + comitari, from Latin comes ‘companion’. - an increase in student numbers and the concomitant increase in class size