The LU can separately indicate whether this prevents it from acting as a primary LU (PLU) or as a secondary LU (SLU).是什么意思_The LU can separately indicate whether this prevents it from acting as a primary LU (PLU) or as a secondary LU (SLU).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句