op-,相对，对着的，-pon,放置，词源同pose,component.即对着放的，引申词义反对者，对手。

1. Young and old saw in him an implacable opponent of apartheid.

无论老少都看出他是种族隔离制度的坚决反对者。

2. The president put the blame squarely on his opponent.

总统将责任完全归咎于对手。

3. He's the best opponent I've come across this season, a great player.

他是我本赛季遇到的最出色的对手，一位了不起的运动员。

4. Her opponent called her a liar to her face.

她的对手当着她面说她是撒谎精。

5. The worst thing you can do is underestimate an opponent.

最严重的错误就是低估对手。