encroachment[侵犯]
-eg: The construction of vacation resort near the sea is an encroachment to marine organisms' breeding sites.;
wildlife conservation[野生动物保护];
die out[灭绝];
mutilation[切断]
-eg: Poaching causes mutilation and death to rare breeds.
vaccine[疫苗]
- eg: Testing on animals has helped develop vaccine for many life threatening diseases.;
breeding[繁殖] - [拓]captive breeding[生工繁殖]，
breeding ground[滋生地/繁殖地];
vivisection[活体解剖] - [拓](anti-)vivisectionist[(反对)活体解剖者]
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