1.block v.阻碍(hinder)；堵塞(obstruct)；n．街区(street)

例:No country should block any of its markets to foreign trade.//We know all the neighbors on our block.

派生词：blockade( n./v.封锁)：blockage(n.封锁，妨碍)

2.blot n.墨迹，污迹(spot);v.模糊，遮暗(to make obscure)

例:It sends up a global pall of dust that blots out the Sun.

派生词：blotter(n.吸墨纸)

3.bluegrass n.蓝草音乐(from the Blue Grass Boys, performing group)；莓系属的牧草，早熟禾属植物(any of several grasses of which some have bluish-green culms)

联想记忆：blue(蓝色)+grass(草)一有蓝色草的地方的音乐风格-蓝草音乐

例:Bluegrass musician Bill Monroe's repertory, views on musical collaboration, and vocal style were influential on generations of bluegrass artists.

4. bluntly ad.坦率地，率直地(directly)

词根记忆：来自blunt(a．坦诚的，直率的)

例:Many bluntly admitted that they thought Jane Eyre was a masterpiece.

5.boarder n.寄膳者：寄宿生(one that is provided with regular meals and lodging)

词根记忆：自board(n.膳食;v.寄宿)

例:Foul play was suspected but never confirmed in the death of the boarderin 1985.

6.boaardinghouse n.寄宿公寓(house providing meals and accomodation)

例:Boardinghouses were built to accommodaie the lssei.