8．electrical adj.电的；用电的 9．particular adj.专指的，特指的；特别的；讲究的；挑剔的 10．absorb vt.吸收；理解；使全神贯注 11．belief n．a strong feeling that sth is true 12．operate v．to manage and run a business 13．decrease vt.& vi.to become or make sth become smaller in size，number，etc. 14．measure n．an official action that is done in order to achieve a particular aim 15．appreciate vt.to be grateful for sth that sb has done