optimum翻译_音标
optimum 朗读
optimum
音标：ɒptɪməm
optimum翻译
optimum双语用法和例句
相关单词
outcross osteography overtask oversubscribe osmol olivaceous oasis overbrilliant orchestrion orcin overstowed opisometer oesophageal olein overruff orienteer orthoaxis olap ossifrage oxyhemoglobin