存在暴露于辐射的风险。

There is a risk of ___exposure to radiation.

许多年幼的孩子现在在家里有机会接触电脑。

Many young children now have ___exposure to computers in the home.

由于在整个旅行中暴露于低温，我患上了肺炎，不得不在抵达伦敦时住院。

Due to ___exposure to low temperatures throughout the tour, I developed pneumonia and had to be admitted to hospital on arrival in London.