1PHRASAL VERB 打败;战胜 If you see off an opponent, you defeat them. 打败;战胜 [British] [Also VERB n PREPOSITION]
There is no reason why they cannot see off the Republican challenge. [VERBPREP. noun]
他们没有理由在共和党的挑战中败北。
2PHRASAL VERB 为…送行;送别 When you see someone off, you go with them to the station, airport, or port that they are leaving from, and say goodbye to them there. 为…送行;送别 [Also VERBPREPOSITION n (not pron)]
Ben had planned a steak dinner for himself after seeing Jackie off on her plane. [VERB noun PREP.]