[例]  If the workers do approve the buyout, their company will become the nation’s largest employee-owned enterprise.

buy up  （v）to buy all or nearly all of what is available of something 尽可能买断

[例]　In order to benchmark their products, they bought up all lines of their rivals.

buyer’s market (n) a situation where certain products are in plentiful supply, resulting in low price and good credit term for buyers 买方市场

[例]　Too many entrants into this market created a buyer’s market in TVs.　

[反义词]　seller’s marker

by-product　(n.) substance produced during the making of sth else 副产品

[例]  Ammonia, coal tar and coke are all by-products obtained in the manufacture of the coal gas.

[同义词]  spin-off

byte (n) a unit of computer information consisting of a number of bits or binary digits 字节

[例]　The speed of download is about 1 m bytes per second.