Like most successful politicians, Sinclair was an opportunist.和大多数成功的政客一样, 辛克莱也是个机会主义者。

Car thieves are opportunists.偷车贼都是些瞅准机会就下手的人。

corrupt and opportunist politicians贪污受贿、投机取巧的政客

Carson made the game safe with a brilliant opportunist goal.卡森抓住机会踢进绝妙的一球, 锁定了比赛的胜局。