Exercise is one of the few factors with a positive role in long-term maintenance of body weight.
锻炼是对长期保持体重有积极作用的少数因素之一。
2
Emily has fought with her weight for a long time.
艾米丽跟她的体重斗争了很长时间。
3
The neck of four footed animals is usually long, to have them reach their food without difficulty, but the elephant has a short neck, to make him more easily support the weight of his huge head and heavy teeth.