MG Public Knowledge Hub MG Public Knowledge Hub
Teaching & Research Knowledge Base (WIP)
Classroom Resource
Standardized Test Prep
College Application
Literature
Language Learning
Programming
Teacher Qualification
225
含义
adj. precious, priceless 极为贵重的；⽆价的
词汇
invaluable
⾳标
ɪnˈvæljuəbl
Loading...