bad at

基本解释

Why is the military so bad at retaining these people?
军方在保留这些人材方面为什么做得这样差？
Why then, if communication is vital to our survival as individuals and to the institution of marriage, are we often so bad at it?
为什么会这样，沟通对我们作为个体的生存和婚姻制度是否如此重要，我们通常在这方面如此糟糕？
Humans turn out to be really bad at starting from a simple linear chain of proteins; they need a rough idea of what the protein might look like before they can recognize patterns to optimize.
从一条简单的线性蛋白质链起步时，人类的表现的确很糟糕；在识别出待优化的模式之前，他们需要对蛋白质的样子有个大致的了解。

An old ivy vine, going bad at the roots, climbed half way up the wall.
69KJ/moL Somewhere here, 569 over here, kilojoules per mole, 608 and by his formula he gets 608, which isn't bad, which really isn't bad at all.
在这儿，通过这个公式他得到，或许这并不坏，一点都不坏。
麻省理工公开课 - 固态化学导论课程节选
Oh, this professor is very bad at teaching, he doesn't even teach on the topic or
哦，这个教授教得很不好，他教的内容根本不在点上，或者
课程评价网站 - SpeakingMax英语口语达人

But companies are notoriously bad at evaluating their stock price, and tend to badly mistime buybacks.
FORBES: BP: $8 Billion Share Buyback After TNK-BP Sale Suggests Stock Is Cheap. Is It?