1. 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。
2. Because each individual is short-lived, the population of an opportunist species is likely to be adversely affected by drought, bad winters, or floods. 因为每个个体的生命都是短暂的，“机会主义者”这类物种的群体数量很可能受到干旱、严冬或者洪水等不利因素的影响。
3. The opposite of an opportunist is a competitor. 与机会主义者对立的是竞争者。
4. Most car thieves are opportunist unskilled petty criminals; many are under 20. 大多数偷车贼是机会主义者、不熟练的小罪犯；许多人不到20岁。
5. So as not to allow opportunist fruitful source. 这样才不会让投机取巧者有隙可乘。
