bird sanctuary

area where birds are protected and helped to breed 鸟类保护区.

biological warfare (also germ warfare), biologically, biologist, biology, biomedical, bionic, bionics, biopsy, biorhythm, bioscope, biotechnology, bipartisan, bipartite, biped, biplane, birch, bird, bird of paradise, bird of passage, bird of prey, bird-bath, bird-song, bird-table, bird-watcher, birdbrained, birdcage wire, birdie, birdlime (also lime), birds, birdseed, biretta, Birmingham, birth, birth certificate, birth rate, birth-control, birthday, birthmark, birthplace, birthrate,