To be hard up的意思|示意

Still, it can be hard to admit it when you mess up. You worry that once you confess your mistake, the other person will be angry, refuse to forgive you, or lose trust in you.

你很清楚自己并非十全十美，可是承认自己犯了错也是个难事——你担心的是，一旦承认了错误，对方会生气，会拒绝原谅你，甚至对你失去信任。

Imagine how hard it could be just to set up a project with the right classpath.

想象一下，仅仅是给项目设置正确的类路径就会非常困难。

The effects may be as simple as a page not loading or a form not saving, or could also be something hard to detect or only shows up under certain circumstances.

这些影响可能小到只是影响某个页面的加载或表单保存，也可能是产生难以检测的问题，或者产生只在特定条件下才会出现的错误。

If I thought giving up soda might be hard, it was nothing for me compared to giving up milk.

如果我觉得戒碳酸水很难的话，那就没有东西能比戒掉喝牛奶还难了。

There is no hard and fast rule on how a life handbook should be; it is up to your preference.

人生指南手册应该怎么样，这个没有硬性规定；它取决于你的喜好。

The challenge in working bottom up is that it may be hard to map Strategic and Tactical requirements that were defined before the rule mining unless there is additional metadata and context available.

从下到上的方法的难点在于可能在规则挖掘之前会很难确定战略战术需求，除非有额外可用的元数据和上下文。