to prevent

基本解释

Rent controls were introduced to prevent profiteering.
为了防止牟取暴利因此实行了租金控制。
dict.cn
The soldiers barricaded the streets to prevent an attack.
士兵们在大街上设置路障，阻止进攻。
The main problem is to prevent others cashing in before we have had time to market the product.
主要问题是在我们没有来得及在市场上销售产品之前，防止别人捞一把。

If they had, they would have been tested to see if they needed treatment to prevent an infection like H.I.V.or hepatitis.
It's contracting so the Fed is trying to prevent a serious recession by cutting interest rates; they've been cutting them rapidly.
它在减小,所以美联储正在试图阻止一个因为利率缩减,而产生的严重的经济衰退；,但是他们最近一直在降低利率。
耶鲁公开课 - 金融市场课程节选
In order to keep the currency convertible they had to keep interest rates high to prevent people from demanding the gold.
为了保持货币的转换性,他们不得不将利率提高,以防人们向他们索求金子的兑换。
耶鲁公开课 - 金融市场课程节选

Ratings would have to be confidential to prevent investors from free-riding on each other.
FORBES: Rethinking Credit Ratings