体重减轻和该病的发展速度成比例。
Loss of weight is directly proportional to the rate at which the disease is progressing.
这就意味着回复力，它和张力，成比例，将会加倍。
That means this restoring force, which is proportional with the tension, will also double.
票价和旅行的距离是成比例的。
The cost of the ticket is proportionate to the distance you travel.
票价和旅行的距离是成比例的。
The cost of the ticket is proportionate to the distance you travel.
应用推荐