1N-COUNT 冒险者；冒险家 An adventurer is a person who enjoys going to new, unusual, and exciting places. 冒险者；冒险家
2N-COUNT 投机取巧者；用不正当手段谋求钱财（或权利）者 If you describe someone as an adventurer, you disapprove of them because they are using dishonest or immoral methods to gain money or power. 投机取巧者；用不正当手段谋求钱财（或权利）者 [disapproval]
...unprincipled opportunists and ambitious political adventurers.