opportunistic

机会主义的, 投机取巧的英释中释adjIf you describe someone's behaviour as opportunistic, you are critical of them because they take advantage of situations in order to gain money or power, without thinking about whether their actions are right or wrong

1 opportunistic infection,机会性感染

1 Many of the party's members joined only for opportunistic reasons..这个政党的许多成员入党纯粹是出于投机。