five-stepCOCA⁷⁸⁴¹⁶BNC¹⁷³⁹⁹⁵⁺²iWeb³⁹²⁰⁷ 基本例句 🌏五步；五步曲 The Three Gorges double-way and five-step ship lock is a massive civil and electromechanical works, dealing with constraining factors such as sophisticated technologies, tight time schedule, etc. 三峡双线五级船闸是一个超大型土建施工和机电安装项目，涉及技术复杂、期紧等制约因素。 chinaorb