To give meticulous and thorough instructions or advice; to admonish repeatedly and with great care and attention to detail.
出行前，导游对游客们要注意的事项丁宁周至，确保大家旅途顺利
Before the trip, the tour guide gave the visitors meticulous and repeated instructions on what to pay attention to, ensuring everyone a smooth journey.
Era:
Ancient
Frequency:
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