业务

Our firm has close business ties with yours.

income from main business; main business income; revenue of main business; prime operating revenue

main business

mail-order business

foreign currency transaction

other business revenue/income

retail/wholesale/core business

import and export trade

passenger service

agent service

off-balance sheet business

vocational study

put professional skill above everything

be well versed in one's profession

aspire to professional excellence

professional work takes command

diligently study one's profession

sever one's business connection (with)

pass the business on (to sb)

suspend all business

know one's trade well; try to know one's trade/job better

take business away (from)

discuss business matters

handle trade

resume normal business

expand one's business

know one's business

perform business transactions

conduct a commission business

handle business