underachieve
verb [ I ] uk/ˌʌn.də.rəˈtʃiːv/ us/ˌʌn.dɚ.əˈtʃiːv/
未能充分发挥水平;未展现实力
to do less well than you could or should
Like a lot of boys his age, he's underachieving. 跟许多同龄的男孩子一样,他没有发挥出他的潜能。
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