She's losing weight and only drinks light vegetable soup.
Tips
usage
Generic, descriptive name — covers anything from a Western minestrone to a Chinese-style 时蔬汤. For a more specific Chinese dish, you'd usually name the main vegetable: 番茄蛋汤 (tomato egg soup), 紫菜汤 (seaweed soup), 冬瓜汤 (winter melon soup).