I had a very low contralto voice.我有一副很低的女低音嗓音。The score calls for a contralto.这次的配乐需要一位女低音歌手。The contralto part calls for a very wide range.女低音组要求有较广的音域....

n.硒钴矿...

This paper introduces the structures, Properties and applications in meat products of maltol and ethyl maltol.介绍了麦芽酚及乙基麦芽酚的结构和性质,及它们在肉类加工中的应用.In this paper , we describe a rapid and clean method to synthesize ( ethyl ) m...

钴尘肺...

daltonism的音标：daltonism的英式发音音标为：['dɔ:ltənɪzəm]daltonism的美式发音音标为：['dɔltənɪzəm]...

Bud turned the truck around, and started back for Dalton Pond.巴德把卡车掉头，开始返回多尔顿池。Dalton dealt out five cards to each player.多尔顿给每个玩家发了5张牌。And the enemy had now advanced fifty - five miles from Dalton.现在敌军已经从多尔顿前进了55英里....

alto的复数形式为：altos...