quality of being suitable for a particular occasion or use

I bought these shoes for their practicality, not their appearance. 我买这双鞋是因其实用而并非其样式。

the quality of being able to provide effective solutions to problems

Jonathan has demonstrated enormous practicality in his successful management of the store. 乔纳森经营这家商店很成功，表现出非常强的执行能力。

the possibility of being put into practice

Your suggestion is appealing in theory, but it lacks practicality. 你的建议理论上很吸引人，但不切实际。

the conditions that result from an idea becoming a real situation

The practicalities of having two young children and working full time meant we had to employ a nanny. 有两个年幼的孩子又要全职工作，这种实际情况意味着我们得雇个保姆。

It sounds like a good idea, but you should consider the practicalities before you put it into action. 这听起来是个好主意，但在实施之前你应该考虑一下实际情况。

He was concerned with the practicalities of reducing dependence on fossil fuels.

You have to factor in the practicalities of how long it takes for crops to mature.

I'm delighted to get the job, but I know the practicalities of actually doing it will soon take their toll.