[, ] () an act of buying sth from the person that you previously sold it to回购，返销（从曾经向你买东西的人那里购买）◆The book store operates a book buy-back at the end of the semester.这家书店在学期末经营图书回购业务。 () a situation where a company buys its shares back from the people who own them, in order to reduce the number of its shares available, to reduce its debt, etc.回购（企业买回本身的股票以减少市场上股票的数量、减少债务等）◆Even after a 15% share buy-back, the company will have plenty of cash left to make acquisitions.即使回购了 15% 的股份之后，公司仍留下足够的现金作收购之用。◆buy-back contracts回购合同SYNbuy-in () a situation when a government reduces its country's debt to foreign banks by buying some of it back回购（政府回购某些国债以减少国家对外国银行的负债）◆a debt buy-back plan债务回购计划SYNrepurchase