To talk oneself hoarse; to speak at great length and with much effort, often to no avail.
为了说服大家理解这个方案，他瘏口哓音，几乎说了一整天。
To convince everyone to understand the plan, he talked himself hoarse, speaking for almost the entire day.
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To talk oneself hoarse; to speak at great length and with much effort, often to no avail.
Frequency: