1PHRASAL VERB 摆脱; 抵抗If you fight off something, for example, an illness or an unpleasant feeling, you succeed in getting rid of it and in not letting it overcome you. 摆脱; 抵抗 [Also VERB n PREPOSITION]
Unfortunately these drugs are quite toxic and hinder the body's ability to fight off infection. [VERBPREP. noun]
不幸的是,这些药毒性很大,妨碍身体抗感染的能力。
2PHRASAL VERB 击退If you fight off someone who has attacked you, you fight with them, and succeed in making them go away or stop attacking you. 击退 [Also VERB n PREPOSITION]