first-degree burn編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看first-degree burnfirst-degree burn — 名詞名詞1. a mild burn that only affects the outer layer of skin1.名詞釋義一度燒傷a mild burn that only affects the outer layer of skin例句A first-degree burn usually heals without scarring.