come up against

基本解释

While we all aspire to climb to the top of our respective professions, from time to time we come up against a roadblock, a barrier that slows our pace.
当我们都致力于攀登我们各自领域的巅峰时，我们不时地遭遇到障碍物，降低我们的步速。
And even in situations where cash incentives might seem appropriate, you are liable to come up against the general truth that people hate to feel manipulated.
即使在现金激励看起来合宜的情况下，你也会碰到人们不喜欢感到被人控制这一普遍的真理。
When you start entering data about real-world things, like people, into a computer system, you come up against the difficulty of creating a unique name for each thing.
开始将有关现实世界事物（如人）的数据输入计算机系统时，您会碰到为每样事物创建一个唯一的名称这一难题。

Isn't it enough for me to extrapolate from cases that I do come up against in this life?
难道仅仅依靠我这辈子碰到的东西,不足以使我推断出来吗
耶鲁公开课 - 死亡课程节选
One question is this: Is it really true that in order to think about the perfectly straight, I must have somehow, somewhere at some point come up against, had direct knowledge of, the perfectly straight?
一个问题是,难道真的说,为了想象一条完美的直线,我必须,在某处直接碰到,并直接了解一条完美的直线吗
耶鲁公开课 - 死亡课程节选

As the various sites internationalise they come up against these little local difficulties all the time.
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We are going to come up against another debt ceiling crisis in just two months.
FORBES: Division In Washington Strikes Again

If you come up against a problem or difficulty, you are faced with it and have to deal with it.