定義 / Definition
[verb]
・to become lower, smaller or fewer in amount
・politely refuse (an invitation or offer).
・(especially of the sun) move downwards.
[noun]
・a gradual and continuous loss of strength, numbers, quality, or value.
— その他 例文 —
His health has begun to decline recently.
最近、彼の健康は衰え始めている
Population decline in Japan is accelerating.
日本の人口減少が、加速している