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@houyu0930 see the translate_enzh.py "This is far from being the real WMT17 task - only toyset here you need to register to get UN data and CWT data..." The default...

@martinpopel T2T: 1.6.2 TF: 1.7.0 Pyhton: 3.6.5 I haven't try the newest version. But I've used t2t-datagen to generate librispeech_clean_small dataset. It went well with just a little memory. Maybe...