イエローカード
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Meanings
1
yellow card
In sports, a warning card shown by a referee for a foul or misconduct.
He received a yellow card for a dangerous tackle.
2
International Certificate of Vaccination or Prophylaxis; ICVP
Colloquial term for the yellow-colored vaccination booklet required for international travel; officially called 国際予防接種証明書.
Before traveling abroad, please check your yellow card (vaccination certificate).