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WN: 00837977-a 
忍耐力的严格考验+的
WN: 00837977-a 费力+的
WN: 00837977-a 
difficile
WN: 00837977-a ardu
WN: 00837977-a 
beschwerlich
WN: 00837977-a anstrengend
WN: 00837977-a mühsam
like: 00837977-a → →