戦う， 闘う， たたかう
1. to make war (on), to wage war (against), to go to war (with), to fight (with), to do battle (against)
2. to compete (against)
3. to struggle (against adversities, etc.), to fight, to contend, to resist
对……宣战，对……发动战争，与……开战，与……交战，与……作战；竞争（与...对抗）；抗争（逆境等），战斗，争斗，抵抗