三通 的释义 | Babel Free
sän⁵⁵ tʰʊŋ⁵⁵释义
例句
“三通管”
three-way pipe joint
CEFR 等级
C2
精通
该词属于CEFR C2词汇——精通水平。
该词属于CEFR C2词汇——精通水平。
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