这是为了保护树木不受损。
已经挖开的路基，旁边的树被草绳捆绑起来。[{'character': '已', 'pinyin': 'i3', 'highest pitch': 8.63, 'lowest pitch': 6.87, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '经', 'pinyin': 'jing1', 'highest pitch': 11.29, 'lowest pitch': 9.99, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '挖', 'pinyin': 'ua1', 'highest pitch': 11.29, 'lowest pitch': 9.33, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '开', 'pinyin': 'kai1', 'highest pitch': 10.0, 'lowest pitch': 8.58, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 11.14, 'lowest pitch': 7.56, 'duration': 0.1, 'prosody hierarchy': '#1'}, {'character': '路', 'pinyin': 'lu4', 'highest pitch': 8.55, 'lowest pitch': 6.72, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '基', 'pinyin': 'ji1', 'highest pitch': 8.95, 'lowest pitch': 6.72, 'duration': 0.28, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.19}, {'character': '旁', 'pinyin': 'pang2', 'highest pitch': 8.22, 'lowest pitch': 6.9, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '边', 'pinyin': 'bian1', 'highest pitch': 10.95, 'lowest pitch': 10.15, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 11.14, 'lowest pitch': 9.77, 'duration': 0.11, 'prosody hierarchy': 'null'}, {'character': '树', 'pinyin': 'shu4', 'highest pitch': 12.51, 'lowest pitch': 8.89, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.16}, {'character': '被', 'pinyin': 'bei4', 'highest pitch': 8.74, 'lowest pitch': 6.82, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '草', 'pinyin': 'cao3', 'highest pitch': 7.74, 'lowest pitch': 5.67, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '绳', 'pinyin': 'sheng2', 'highest pitch': 8.25, 'lowest pitch': 5.67, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '捆', 'pinyin': 'kuen2', 'highest pitch': 13.77, 'lowest pitch': 7.23, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '绑', 'pinyin': 'bang2', 'highest pitch': 10.35, 'lowest pitch': 6.9, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '起', 'pinyin': 'qi3', 'highest pitch': 7.66, 'lowest pitch': 6.26, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '来', 'pinyin': 'lai5', 'highest pitch': 6.26, 'lowest pitch': 4.91, 'duration': 0.2, 'prosody hierarchy': '#4'}]