To meticulously refine one's words or arguments, striving for utmost precision and appropriateness; to delve deeply into a subject to find the most fitting expression.
写文章要像探渊索珠一样，字斟句酌，务求表达准确。
When writing an article, one should be like 'exploring the abyss and seeking pearls,' weighing every word carefully to ensure precise expression.
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