If you refer to a male political leader as a strongman, you mean that he has great power and control over his country, although his methods may sometimes be violent or morally wrong.
例句
He was a military strongman who ruled the country after a coup.他是个军事独裁者，在一场军事政变后成为这个国家的统治者。
英英词典释义
Noun
1. a man who performs feats of strength at a fair or circus
2. a powerful political figure who rules by the exercise of force or violencea;
"he is determined to bring down the Iraqi strongman"