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arduous process (It would require taking the genome of the mammoth’s closest living relative – an Asian elephant – and introducing all the relevant changes (synthesiing a whole chromosome is an incredibly arduous process and has not yet been performed in an animal; a woolly mammoth had twenty-nine pairs of chromosomes).  bigthink.com ART Vancouver) | |||
| labour-intensive process | |||
| labour intensive process | |||
| time-taking process | |||
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| labor-intensive processes | |||
| трудоёмкий процесс: 6 phrases in 6 subjects |
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