通常依时间而定——你上网的时间。
B应该很便宜。通常依时间而定——你上网的时间。
It should be quite cheap. It usually depends on the time - how long you are online.
这些专家参加的时间长短依解决方案的复杂度而定；他们可以全职工作，也可以兼职工作。
The length of involvement of these experts is dependent on the complexity of the solution; their involvement may be either full or part time.
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