sound cutting meaning in Chinese

健全材面切削法
声剪接

The chimes of the bell die down , but as students at pinglin junior high school start studying in class another sound cuts through the tranquility . only 100 meters away from the classroom , the steady rumble of traffic and the noise of tannoy announcements from the hsuehshan tunnel is a constant distraction . according to the ministry of education , the noise levels throughout the campus are within legal limits
上课钟声响起，不过坪林国中教室里开始读书，但还有多了宁静中划过的另一个声音；离教室不到一百公尺，经过雪山隧道的车流噪音，抽风机运转的巨大声响，还有不定时的广播很容易分心。