To make matters worse, insulin resistance creates a vicious circle in which the insulin will increasingly be less effective.

更糟的是，抗胰岛素会造成恶性循环，在此循环中的胰岛素将越来越失去效力。

youdao

An industry with strong developing and manufacturing but weak marketing is bound to be trapped in a vicious circle.

研发能力和制造能力强但营销能力弱的产业，往往会陷入投入多收益少的“产业恶性循环”之中。

youdao

In short, because women think they're less competent than they really are, they're also less self-confident than they should be. It's a vicious circle.

简而言之，正是因为女性低估了自己的竞争力，导致她们缺乏信心，从而形成恶性循环。

youdao

If investors stop buying bonds issued by other governments, then those governments in turn will not be able to repay their creditors - a potentially disastrous vicious circle.

BBC: Eurozone crisis explained