background
background/ˈbækɡraund/n.［c］背景，背景情况(［反］foreground): cloth with red spots on a white background白底红点的布The mountain forms the beautiful background of the scene.这座···
backup
backup /ˈbækˌʌp/n. [c] 1.帮助；援助；支持：military backup军事援助2.替代物；备用品；备份：a backup disk备份磁盘Have you kept a backup of this file?你把这文件备份了吗?The hospit···
backward/backwards
backward/ˈbækwəd/adj.1.向后的，倒的(［反］forward): a backward glance向后看一下；the backward journey回来的旅途；the backward flow of the tide潮水回流2.落后，差(［同］behindhand···
bacon
bacon/ˈbeikən/n.［u］咸肉，熏肉：eat/have bacon吃咸肉；be able to make bacon能制咸肉/熏肉I’ll have two rashers of bacon and a fried egg.我要两片燻肉和一个煎蛋。
bacteria
bacteria/bækˈtiəriə/n.(pl.of bacterium)细菌：cultivate bacteria培养细菌；resist the invading bacteria抵抗侵入的细菌；the soil bacteria土壤细菌
bad
bad/bæd/adj.(worse, worst) 1.坏的；邪恶的，不道德的，不受欢迎的，劣质的：bad language粗话，脏话；bad news坏消息；bad weather可恶的天气It is bad to steal.偷窃是坏事。He speaks bad ···
badge
badge/bædʒ/n.［c］1.徽章，证章：a Red Cross badge一枚红十字徽章2.标记，标识：Some officials wear chains round their necks as badges of office.一些官员戴着绶带作为任职的标识。3.象···
badly
badly/ˈbædli/adv.(worse, worst)坏地；非常地: badly made (dressed, wounded)做(穿)得差(伤得重)；want/need sth. badly非常想要某样东西badly(-) off穷困潦倒：They’re not badly-off but···
badminton
badminton/ˈbædmintən/n.［u］羽毛球；羽毛球运动：play badminton打羽毛球Badminton can be played by two or four people.羽毛球可由两人或四人来打。
