单词	four-tier
释义	four-tierCOCA²⁰⁷⁹⁰⁶BNC²³⁶²¹³⁺¹🌏四层；四级
随便看	technical diffusion technical design technical design and making technical design and parameters technical design control Technical Designer Technical Design Guide technical design method Technical Design Mgr./Spvr technical design of construction surveying technical detail technical details technical detection technical determinism Technical Developing technical development Technical Development and Consultancy Co Technical Development Center technical development contract Technical Development Division Technical Development Evaluation Center technical development expense Technical Development Laboratories Technical Development Objective Technical Development of Chemical Engineering