concern oneself in

be concerned with ... concern oneself in sth. 忙于； 从事； 关心， 关切 concern oneself with sth. 忙于； 从事； 关心， 关切 ...

新概念第三册第7课... ... concern oneself in adj. 干预；从事（参与；从事参与）；干涉 concern with v. 使关心，挂念 ...

be able to do能够... ... concern oneself with 研究的对象是… concern oneself in 关心，忙于 concern oneself about 关心，忙于 ...