If they require ongoing technological support, the spare parts and the relevant know-how may be hard to find.
如果它们需要持续的技术支持，可能很难找到备件和有关的专门知识。
Have a spare tube and tools, and know how to change a tire.
携带备用车胎和工具，并知道如何换胎。
He doesn't know how to dispose of his spare time.
他不知如何打发空余时间。
We do not know how to deal with the plenty of spare time.
我们不知道如何处理大量的业余时间。
At first he didn't know how to spend the spare time.
一开始，他都不知道怎么度过他的空余时间。
He doesn't know how to dispose of his spare time.
他不知道怎样安排业余时间。
I don't know how to idle away my spare time.
我不知道怎样打发业余时间。
John: That's a good ideal and in this way we will know how we spend our time and spare a lot of time to do other things.
约翰：好主意！用这种方法我们知道时间花到哪里，并且能省出时间做其他的事情。
"I still don't know how they managed to find so many spare parts, but I think they have a very good chance of getting it going again," he said.
“我始终不知道他们从哪里找来那么多备用零件，不过我觉得他们很有机会让它重新运作”他说到。
I hope you can chat with me in English when you have spare time, if I don't know how to say, then, I can ask you dierctly.
我期望在您有时间的情况下，能跟我用英语聊会儿天，要是我有不会说的，我能不能端直问您。
I hope you can chat with me in English when you have spare time, if I don't know how to say, then, I can ask you dierctly.
我期望在您有时间的情况下，能跟我用英语聊会儿天，要是我有不会说的，我能不能端直问您。
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