1. an awkward bad-mannered adolescent boy. 笨拙的没礼貌的青少年。
2. The researchers suggest that in a natural setting, the males might benefit with more food if they punished bad-mannered females. 研究人员指出，在自然环境中，如果雄性鱼惩罚了行为不礼貌的雌性，也许能获得更多的食物。
3. Although kids will be kids and every class has the shining stars and a few bad apples, the students I taught were courteous and well-mannered and respectful. 虽然孩子还是孩子，每个班级都有尖子生和一些坏学生，但我教过的学生都是有礼貌、守规矩的，而且还尊重他人。
