SlowGuess/ACL_2020_OCR huggingface dataset:
Source	Batteries in some of the devices are overheating, causing a fire or an explosion, she said.
Retrieved target	CPSC说:“锂离子电池包会过热,给消费者造成燃烧和火灾危害。”
Rewritten target	她说:“设备电池会过热,爆炸造成燃烧和火灾危害。”
Human reference	她说:“一些设备中的电池会过热,从而造成火灾或爆炸。”
Source	Scientists have spotted gravitational waves in a historic discovery hailed as “the biggest scientific breakthrough of the century”.
Retrieved target	国际研究小组说,对这些引力波的首次探测将迎来天文学的新纪元。
Rewritten target	研究科学家们,对这些引力波的首次探测是最大历史性突破的新纪元。
Human reference	科学家们探测到了引力波,这一历史性发现被誉为“本世纪最大的科学突破”。
Figure 5: Cases of the WMT17 English-Chinese translation results. The underlined words are in hierarchical rules.
Source	He was the brother that went with the flow.
Output	他是一个跟随流动的兄弟。
Reference	他是一个随从大家意见的人。

Output	在未来的日子里,这里有个报称埃尔多安先生表现的好像没有不好的事情发生过一样。
Reference	次日,此间一家报纸写到,埃尔多安先生则表现的好像什么都没发生一样。
Figure 6: Cases of the retrieved and rewritten sentences. The bold words are unaligned source words while the strikethrough words are unaligned target words. Human references are given by a translation expert.