| 英文单词 | 中文释义 |
|---|---|
| amphibious | 两栖的（动物）➕ |
| arboreal | 栖于树木的➕ |
| breed | 繁殖➕ |
| burrow | 挖洞➕ |
| captivity | 圈养➕ |
| courtship | 求偶➕ |
| domesticate | 驯养➕ |
| elusive | 难以捉摸的➕ |
| embryo | 胚胎➕ |
| endanger | 危及,使濒危➕ |
| evolution | 进化➕ |
| extinct | 灭绝➕ |
| extinction | 灭绝➕ |
| gallop | 飞奔（马）➕ |
| instinctual | 本能的➕ |
| larva | 幼虫➕ |
| lethal | 致命的➕ |
| livestock | 牲畜➕ |
| maltreat | 虐待➕ |
| mate | 交配➕ |
| menace | 威胁➕ |
| migratory | 迁徙的➕ |
| mutate | 变异➕ |
| observe | 观察➕ |
| overgraze | 过度放牧➕ |
| pedigree | 血统➕ |
| reptile | 爬行动物➕ |
| scarce | 稀少的➕ |
| species | 物种➕ |
| vertebrate | 脊椎动物➕ |
| veterinary | 兽医的➕ |
| vicious | 凶恶的➕ |