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C068 · 简单句（95 课）
Gold is a metal that appears naturally and in a pure state.
Course 068
(简)Gold is a metal that appears naturally and in a pure state.
1 句 · 父母与孩子分角色配音
旁白 neutral
Gold is a metal that appears naturally and in a pure state
黄金是一种天然存在且呈纯净状态的金属
