重点讲解：
1. prevent sb. from doing sth. 阻止；制止；阻碍；
例句：Sound-insulating floors, partitions, or enclosures are used to confine the noise within a room or to prevent noise from entering a room.
现在人们采用隔声楼板、间壁或围护结构把噪音限制在房间内部或不让噪音传人房间[^.wybuH6q%Hpj。
2. be responsible for 负有责任的；应承担责任的；
例句：His critics maintain that he's responsible for many of Algeria's ills.
他的批评者们坚持认为他应该为阿尔及利亚所面临的许多难题负责任*h5Rj~Fu&@(uF3v-@A3。
3. a range of （同类事物的）一系列，一连串；
例句：The two men discussed a range of issues.
那两个人讨论了一系列问题fAob8l@p95HU。
4. come from 来自；始于；
例句：Chocolate comes from the cacao tree.
巧克力出自可可树=IVYHZ!WlTl。