火山活动是如何在离板块边界那么远的地方发生的呢？
How can volcanic activity occur so far from a plate boundary?
边界是特别容易出现故障的地方。
Boundary is the place where the fault occurs especially easily.
我们夜晚在靠近边界的地方露营。
黑洞是宇宙的已知部分，和现有科学尚未触及的地方的边界。
The boundry between the known universe and the place beyond the reach of science.
黑洞是宇宙的已知部分，和现有科学尚未触及的地方的边界。
The boundry between the known universe and the place beyond the reach of science.
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