primary support system
📖 释义
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主要支持系统; 主要支撑系统
💬 例句
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Without her primary support system, she felt completely alone in the new city.
没有她的主要支持系统,她在新城市感到非常孤独。
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The engineers worked overnight to repair the primary support system of the power grid.
工程师们通宵工作以修复电网的主要支撑系统。