丈夫だ
These hiking boots are sturdy.
この登山靴は丈夫です
These hiking boots are sturdy because they are made of thick leather.
この登山靴は厚い革で作られていて丈夫です
These hiking boots are sturdy because they are made of thick leather and the soles are hard.
この登山靴は厚い革で作られていて靴底も硬いので丈夫です
These hiking boots are sturdy even on rainy days because they are made of thick leather and the soles are hard.
この登山靴は厚い革で作られていて靴底も硬いので雨の日でも丈夫です
These hiking boots are sturdy enough for a long hike even on rainy days because they are made of thick leather and the soles are hard.
この登山靴は厚い革で作られていて靴底も硬いので雨の日でも長い登山に使えるほど丈夫です