请支持暂时遇到困难的中国足球(7)

defender
表示“防守队员；后卫”，英文解释为“someone in a sports team who tries to prevent the other team from scoring points, goals, etc.”
striker
表示“（足球比赛等中的）前锋”，英文解释为“a player in a game such as football whose main purpose is to try to score goals rather than to prevent the opposing team from scoring”。
underdog
1）表示“弱者；弱势群体”，英文解释为“a person or group of people with less power, money, etc. than the rest of society”举个：
Her sympathy was always for the underdog in society.
她一直同情社会上的弱势群体。
2）表示“（比赛中）不被看好的一方”，英文解释为“in a competition, the person or team considered to be the weakest and the least likely to win”。
The win was sealed in the second half when striker Phan Van Duc scored, prompting cheers from 6,000 local spectators at My Dinh National Stadium.
下半场，前锋潘文德（Phan Van Duc）的进球锁定胜局，引发了美亭国家体育场（My Dinh National Stadium）内6000名当地观众的欢呼。
seal
表示“确定；明确定下来；使成定局”，英文解释为“to make sth definite, so that it cannot be changed or argued about”举个：
The two leaders sealed their agreement with a handshake.