“口若悬河”常见的英文表达有 "talk glibly/eloquently and at length" 、"speak with a flood of words" 或 "have a glib tongue"，以下为你详细介绍：
释义：glibly 指“口齿伶俐地；油腔滑调地”；eloquently 指“雄辩地；有说服力地”；at length 表示“详细地；充分地”。整个短语表达一个人说话流畅、滔滔不绝且内容丰富。
例句：He could talk glibly and at length about any topic under the sun.（他能够口若悬河地谈论天下任何话题。）
释义：a flood of words 形象地描绘出话语如洪水般不断涌出，强调说话者话语的连续性和丰富性。
例句：During the debate, he spoke with a flood of words, leaving his opponents little chance to respond.（在辩论中，他口若悬河，让对手几乎没有机会回应。）
释义：glib 除了表示“口齿伶俐的”，还有“油腔滑调的；不诚恳的”含义，所以这个短语有时会带有一点贬义，暗示说话者可能只是表面上的能说会道，内容不一定有深度。
例句：He has a glib tongue and can easily charm people with his words.（他口若悬河，很容易用言语迷惑人。）