必備 的释义 | Babel Free
pi⁵¹⁻⁵³ peɪ̯⁵¹例句
“必備條件”
required conditions
“必备条件”
required conditions
“必備文件”
required documents
“必备文件”
required documents
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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