你认为我们应该如何提升加工贸易的效益？
海关总署积极拓展和优化加工贸易的产业结构调整等等。[{'character': '海', 'pinyin': 'hai3', 'highest pitch': 7.92, 'lowest pitch': 7.41, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '关', 'pinyin': 'guan1', 'highest pitch': 11.4, 'lowest pitch': 7.92, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '总', 'pinyin': 'zong2', 'highest pitch': 10.89, 'lowest pitch': 8.4, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '署', 'pinyin': 'shu3', 'highest pitch': 9.61, 'lowest pitch': 3.89, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '积', 'pinyin': 'ji1', 'highest pitch': 10.69, 'lowest pitch': 10.11, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '极', 'pinyin': 'ji2', 'highest pitch': 10.4, 'lowest pitch': 8.03, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '拓', 'pinyin': 'tuo4', 'highest pitch': 9.82, 'lowest pitch': 7.25, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '展', 'pinyin': 'zhan3', 'highest pitch': 7.84, 'lowest pitch': 4.16, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '和', 'pinyin': 'he2', 'highest pitch': 7.45, 'lowest pitch': 6.93, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '优', 'pinyin': 'iou1', 'highest pitch': 9.14, 'lowest pitch': 7.25, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '化', 'pinyin': 'hua4', 'highest pitch': 9.37, 'lowest pitch': 6.54, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '加', 'pinyin': 'jia1', 'highest pitch': 8.19, 'lowest pitch': 7.58, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '工', 'pinyin': 'gong1', 'highest pitch': 8.66, 'lowest pitch': 8.47, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '贸', 'pinyin': 'mao4', 'highest pitch': 9.15, 'lowest pitch': 7.3, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '易', 'pinyin': 'i4', 'highest pitch': 7.38, 'lowest pitch': 6.37, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 5.78, 'lowest pitch': 5.45, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '产', 'pinyin': 'chan3', 'highest pitch': 6.21, 'lowest pitch': 5.31, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '业', 'pinyin': 'ie4', 'highest pitch': 9.06, 'lowest pitch': 6.21, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '结', 'pinyin': 'jie2', 'highest pitch': 7.18, 'lowest pitch': 6.38, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '构', 'pinyin': 'gou4', 'highest pitch': 9.18, 'lowest pitch': 8.24, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '调', 'pinyin': 'tiao2', 'highest pitch': 9.73, 'lowest pitch': 5.74, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '整', 'pinyin': 'zheng3', 'highest pitch': 10.23, 'lowest pitch': 5.82, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '等', 'pinyin': 'deng2', 'highest pitch': 6.43, 'lowest pitch': 5.75, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '等', 'pinyin': 'deng3', 'highest pitch': 7.48, 'lowest pitch': 5.17, 'duration': 0.27, 'prosody hierarchy': '#4'}]