车辆已经成为我们生活中不可或缺的一部分了。
进入汽车时代以来，人们似乎一刻也离不开滚滚的车轮。[{'character': '进', 'pinyin': 'jin4', 'highest pitch': 10.68, 'lowest pitch': 9.53, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '入', 'pinyin': 'ru4', 'highest pitch': 9.87, 'lowest pitch': 8.53, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '汽', 'pinyin': 'qi4', 'highest pitch': 10.88, 'lowest pitch': 8.53, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '车', 'pinyin': 'che1', 'highest pitch': 11.07, 'lowest pitch': 9.95, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 10.79, 'lowest pitch': 6.62, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '代', 'pinyin': 'dai4', 'highest pitch': 7.9, 'lowest pitch': 6.41, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '以', 'pinyin': 'i3', 'highest pitch': 6.41, 'lowest pitch': 5.56, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '来', 'pinyin': 'lai2', 'highest pitch': 6.15, 'lowest pitch': 5.13, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.23}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.24, 'lowest pitch': 6.52, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 8.16, 'lowest pitch': 7.24, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '似', 'pinyin': 'sii4', 'highest pitch': 8.29, 'lowest pitch': 7.38, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '乎', 'pinyin': 'hu1', 'highest pitch': 9.01, 'lowest pitch': 7.42, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '一', 'pinyin': 'i2', 'highest pitch': 8.16, 'lowest pitch': 6.71, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '刻', 'pinyin': 'ke4', 'highest pitch': 11.4, 'lowest pitch': 9.43, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '也', 'pinyin': 'ie3', 'highest pitch': 9.43, 'lowest pitch': 6.17, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '离', 'pinyin': 'li2', 'highest pitch': 6.33, 'lowest pitch': 5.91, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 7.62, 'lowest pitch': 6.67, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '开', 'pinyin': 'kai1', 'highest pitch': 8.55, 'lowest pitch': 8.06, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '滚', 'pinyin': 'guen2', 'highest pitch': 7.95, 'lowest pitch': 6.67, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '滚', 'pinyin': 'guen3', 'highest pitch': 8.6, 'lowest pitch': 5.37, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 5.84, 'lowest pitch': 5.37, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '车', 'pinyin': 'che1', 'highest pitch': 11.07, 'lowest pitch': 5.84, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '轮', 'pinyin': 'luen2', 'highest pitch': 7.92, 'lowest pitch': 6.18, 'duration': 0.37, 'prosody hierarchy': '#4'}]