someone who behaves in an uncontrolled or unexpected way and is likely to cause problems for other p

中文解释

喜欢惹是生非的人，爱招惹麻烦的人；举止无法预料的人 He\'s seen as something of a loose cannon by other team members. 在其他队员看来，他是个有点爱惹麻烦的人。