banana republic

(derog 贬) small, often unstable, country whose economy depends on the export of fruit 香蕉共和国（以水果输出为经济命脉的, 常为不稳定的小国）.

balls-up, bally, ballyhoo, balm, balmily, balminess, balmy, baloney, balsa, balsam, Baltic, baluster, balustrade, bamboo, bamboo-shoot, bamboozle, ban, banal, banality, banana, banana skin, band, Band-aid, band-saw, bandage, bandanna, bandbox, bandeau, bandit, banditry, bandmaster, bandoleer (also bandolier), bandsman, bandstand, bandwagon, bandwidth, bandy, bandy-legged, bane, baneful,