underachieve

Countries as huge and complicated as China can underachieve or collapse under their own contradictions.

像中国这么巨大且复杂的国家常不能有效发挥潜力，或陷于内部矛盾。

A low IQ indicates innovation destined to underachieve.

低IQ表明创新注定无法实现期望。

Boys may underachieve because they pick up on teachers' assumptions that they will obtain lower results than girls and have less drive.

男孩表现不如理想可能是因为他们接受了老师认为他们比女孩成绩稍逊的看法，而缺乏努力的动力。