inter-,在内，在中间，相互，-fer,击，打，钻孔，词源同bore,perforate.引申词义干扰，干涉。

1. He knew when to leave well alone and when to interfere.

他知道什么时候该适可而止，什么时候该插手干预。

2. Smoking and drinking interfere with your body's ability to process oxygen.

抽烟与酗酒有碍身体处理氧气的能力。

3. The hearing-impaired say digital phones interfere with hearing aids.

听觉障碍者反映数字电话会对助听器造成干扰。

4. Mrs. Blount warned me not to interfere.

布朗特夫人警告我不要插手。

5. Don't interfere in what doesn't concern you.

不要管与自己无关的事。