“固执的”用英语怎么说？

他是个固执的孩子.He is a stubborn child.他是个固执的孩子, 总是坚持自己的权力和主意.He is an assertive boy, always insisting on his own rights and opinions.他轻轻地搔着甲虫光滑的壳，但这只固执的甲虫就是不动。He tickled gently at its glossy carapace,but the stubborn beetle wo...