独生子女 only child
与他人合作 cooperate with others
溺爱 spoil
互相帮助 help each other
自立 self-dependence
保持乐观 keep optimistic
不断努力 make constant efforts
悲观的 pessimistic
创新 innovation
积极态度 positive attitude
勤奋 diligence
激烈竞争 fierce competition
缺乏自信 lack of confidence
恒心 perseverance
团队合作 teamwork
团队精神 team spirit