買賣的英語翻譯：

merchandise; marketing; bargain; buying and selling; trade; transaction
【經】 bargain; commercial act; commercial transaction; handle

有價證券的英語翻譯：

portfolio; securities
【經】 documents of value; valuable documents; valuable papers
valuable secutities; value paper

損益的英語翻譯：

increase and decrease; profit and loss
【經】 gain and loss; gain or loss; loss and gain; profit and loss