n the commercial exchange (buying and selling on domestic or international markets) of goods and services
n the skilled practice of a practical occupation
n the business given to a commercial establishment by its customers
n a particular instance of buying or selling
n people who perform a particular kind of skilled work
n steady winds blowing from east to west above and below the equator
n an equal exchange
v engage in the trade of
v turn in as payment or part payment for a purchase
v be traded at a certain price or under certain conditions
v exchange or give (something) in exchange for
v do business; offer for sale as for one's livelihood
n. 交易；商业, 各种营业；贸易（trade的复数）