1.block release (到高校進(jìn)行一周或幾周的)短期脫產(chǎn)進(jìn)修

　　例句：We are short-staffed at the moment as two of our team are on block release.

　　我們目前人手不足，因?yàn)樾〗M里有兩人脫產(chǎn)學(xué)習(xí)。

　　2.black economy 黑市經(jīng)濟(jì)(指為逃稅而隱瞞收入的地下經(jīng)濟(jì))

　　例句：The part of an economy which is not declared to the tax authorities is known as the black economy.

　　不向稅務(wù)部門申報(bào)的經(jīng)濟(jì)領(lǐng)域被稱為黑市經(jīng)濟(jì)。

　　3.Black Friday (尤指經(jīng)濟(jì)領(lǐng)域內(nèi)災(zāi)難性的)黑色星期五，災(zāi)難性的一天

　　4.Black Monday (股市狂跌的)黑色星期一

　　5.blue chip 藍(lán)籌股、績優(yōu)股

　　例句：She put her money into blue chips.

　　她把錢投資在績優(yōu)股上。