croakern.
英 'krəʊkə | 美 'krokɚ
中文n. 嘎声的人；喊冤者，鸣冤者
词根词源
croaker (n.)"prophet of evil," 1630s, agent noun from croak (v.); a reference to the raven (compare Middle English crake "a raven," early 14c., from Old Norse kraka "crow," of imitative origin).
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