英语词汇proficiency in怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	proficiency in
释义	请查阅词条：proficiency
随便看	sinfonia sinfonia concertante sinfonietta sinfoniettas sinful sinfully sinfully sinfulness sinfulness sinfulnesses sinful person sing sing sing. singable singable sing about sing a different song sing a different tune sing a different tune (or song) sing a different tune (or song) sing along sing-along singalong singalong

英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。