动物实验 animal experiments
动物权益保护主义 animal rights activists
医学研究 medical research
残忍的 cruel/merciless/inhuman/callous/brutal
活体揭破 vivisection
麻醉 anesthetic
减轻动物的痛苦 alleviate/ease animals’ pain
宠物是主人的伙伴 pets are companions of their masters
给主人心理安慰 afford their masters consolation and comfort
偷猎 poach/poaching
某一种事物是没有替代物的 there are no replacements/substitutes/alternatives for sth
濒危动物 endangered species