lose validity; "My passports expired last month"効力を失う失効
pass from physical life and lose all bodily attributes and functions necessary to sustain life; "She died from cancer"; "The children perished in the fire"; "The patient went peacefully"; "The old guy kicked the bucket at the age of 102"物理的な生きている状態から去り、生命を維持するのに必要なすべての身体上の属性と機能を失う隠れる