limb = arm or leg

working on = result in

underlying = base on

not the only （不是唯一） = other than

promptly = immediately 立即地

entirly 完全；彻底；完整地 = exclusively 仅仅；专门；单独

available source of food = prey

reduction = loss

and = along with

were born = breed

suggest = proposal

rehome ... on island = placed on a small island

captive 圈养 = captured

a piece of legislation 立法 = a motion 议，动议

protecting the species = protecting thylacines

attempts to find = expeditions and searches

environmental advantages = ecological benefit

widespread global use = the most consumed…in the world