![Thegroundwewalkonseemsfirm,butdeepundertheearthandunder...]( "Thegroundwewalkonseemsfirm,butdeepundertheearthandunder...")
- 問題詳情：Thegroundwewalkonseemsfirm,butdeepundertheearthandundertheseatherockschangeandmove.Insomepartsoftheworldthereare“firemountains”，whichwecalltimetotimetheyburstopenandthrowoutfireandburningash.Thesevolcanoesareverydangerous.HongKongdoesnothave...
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