我听说最近美元的汇率有所下降。
美国乐于看见美元的贬值。[{'character': '美', 'pinyin': 'mei3', 'highest pitch': 8.46, 'lowest pitch': 6.51, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '国', 'pinyin': 'guo2', 'highest pitch': 9.26, 'lowest pitch': 7.13, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '乐', 'pinyin': 'le4', 'highest pitch': 10.72, 'lowest pitch': 9.18, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '于', 'pinyin': 'v2', 'highest pitch': 9.18, 'lowest pitch': 8.42, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '看', 'pinyin': 'kan4', 'highest pitch': 9.93, 'lowest pitch': 8.01, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '见', 'pinyin': 'jian4', 'highest pitch': 8.42, 'lowest pitch': 7.61, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '美', 'pinyin': 'mei3', 'highest pitch': 8.46, 'lowest pitch': 5.56, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '元', 'pinyin': 'van2', 'highest pitch': 7.69, 'lowest pitch': 5.57, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 9.92, 'lowest pitch': 7.69, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '贬', 'pinyin': 'bian3', 'highest pitch': 8.75, 'lowest pitch': 4.84, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '值', 'pinyin': 'zhiii2', 'highest pitch': 8.59, 'lowest pitch': 5.28, 'duration': 0.32, 'prosody hierarchy': '#4'}]