根据所给首字母及英文释义写出下列单词

根据所给首字母及英文释义写出下列单词
b (n)the distance along a city street from one street to the next
s (adv)in a line or direction that is not curved or bent
l (N)a powerful flash of light in the sky caused by electricity and usually followed by thunder
a (N)the way someone pronounces the words of a language,showing which country or which part of a countryhe comes from
L （n)a large vehcle for carrying heavy goods