553 This target address is not our MX service client in reply to RCPT TO command翻译

target Target Addr是什么 553 This target address is not our MX service client in reply to RCPT TO command翻译 if(addr & 1) addr是什么程序 addr是什么软件 翻译We have failed to meet this year's production target of 20,000 cars. This activity helps students apply the target language to livesThis activity helps students apply the target language to their own lives. 帮忙看一下这段语句的含义,想改可以吗?on (dragOver,keyPress ) {// Locate the screen that is the target of the behaviorvar screen = null;var target = this;while ((screen == null) && (target = undefined) && (target = null)) {if (target target shaft target是什么意思 target audience target market TARGET怎么样 什么是TARGET 什么是TARGET 地址的英文缩写?ADDr.ADD.ADR.