Both kinds of plate boundary are associated with fault systems, earthquakes and volcanism, but the kinds of geologic activity observed at the two boundaries are quite different.

两种板块边界均与地层系统、地震以及火山活动有关，但在两种边界处观察到的诸般地质活动却迥然不同。

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He's already hit two sixes, ie scored two boundaries worth six runs each.

他已经击中球获两个六分（两次击球到边界线， 每次得六分）。

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The two boundaries of the Yili Block have been reworked by the Permian strike-slip faulting.

伊犁地块的南、北缘边界在二叠纪期间经受了走滑作用的强烈改造。

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Duminy clubbed two boundaries off van der Merwe and a six over long on off Vinay Kumar.

BBC: Duminy ignites Champions League

With 10 needed from the final over, Robin Uthappa (47) hit two boundaries.

BBC: Thrilling India win levels series

But Sri Lanka soon restored order as Mahela Jayawardene cut and pulled Shoaib for two boundaries in the same over.

BBC: SPORT | Cricket | Sri Lanka thrash Pakistan