Many doctors prefer a natural food, rich in dietary fibre, which will help you to avoid constipation, rather than having to resort to purgatives. The reason is obvious-prevention is always better than cure.
di.e.tar.y adj.(形容词)Of or relating to diet.饮食的:饮食的与饮食有关的n.(名词)【复数】di.e.tar.ies A system or regimen of dieting.饮食:饮食的体系或生活方式A regulated daily food allowance.每日规定的食物量 【引伸】 di.etar.ily