If you underachieve, you achieve less than you could; less than your full potential.

如果你成绩不佳， 你的成就会比你能达到的要少； 低于你的全部潜力。

A serially underachieving economy, repeatedly trumped by dynamic Braziln Mexico outpaced Brazil last year and will grow twice as fast this year.

那个“经济连年停滞的”、“总被势头较好的巴西踩在脚下的”墨西哥已不复存在——墨西哥的经济增速已于去年超过巴西，今年有望翻其一番。

Friendly and news-free Meta CEO Mark Zuckerberg hasn't been shy in explaining where he thinks Twitter has failed, saying that the platform had underachieved due to the amount on hostility on Twitter.

友善且不爱新闻的 Meta 首席执行官马克·扎克伯格毫不羞涩地解释了他认为 Twitter 失败的地方，称该平台的表现不佳是由于 Twitter 上的敌意程度。