Grammar Note
名词用法较少见，多指地下通道或水下航行；注意与形容词 underway（进行中的）区分。
地下通道；下穿道；隧道
underways — plural of underway
先理解核心含义，再看它在真实句子里的用法。
地下通道；下穿道；隧道
A road or path that goes beneath another road or obstacle; an underground passage or tunnel.
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可生成：例句 Examples。只有点击后才会开始生成。
地下通道；下穿道
A road, track, path, or street for going under another way or obstacle; an underpass.
地下通道；地铁；隧道
An underground passage, subway, tunnel.
航行,尤指水下航行
A voyage, especially underwater.
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名词用法较少见，多指地下通道或水下航行；注意与形容词 underway（进行中的）区分。
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.