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Words
Kanji
石
炭
纪
【
Shí
tàn
jì
】
Carboniferous (geological period 354-292m years ago)
石
炭
纪
【
Shí
tàn
jì
】
Carboniferous (geological period 354-292m years ago)
石
HSK 3
1
含义
stone, rock, mineral; Kangxi radical 112
拼音
shí
Details
炭
HSK 7-9
5
含义
charcoal; coal; carbon
拼音
tàn
Details
纪
HSK 3
含义
record, annal, historical account
拼音
jì
Details