胸无大志

to have no aspirations (idiom) / unambitious

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

not to have / no / none / not / to lack / un- / -less

variant of 胸[xiong1]

chest / bosom / heart / mind / thorax

aspiration / ambition / the will

sign / mark / to record / to write a footnote

high aims