They therefore contain large, exotic crystals that can grow only at depth.

因此，它们包含了只在深层才能形成的硕大无比的珍稀水晶。

youdao

They therefore contain large, exotic crystals that can grow only at depth.

因此，它们包含了只在深层才能形成的硕大无比的珍稀水晶。

youdao