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n. 反向通道; 〈美〉秘密渠道; 非正规途径
🧩 词语组成解析
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[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
Would you please lead me to look around your factory?
您能领我参观一下工厂吗？
Method will teach you to win time.
方法可教会你赢得时间。
From an attic window we could get a sweeping view of the river where their land joined ours,
从顶楼窗口看去，我们农场与他们农场接壤处的那段河流一览无余。