Preparing a new method can take time, especially for a large and complex business.

If you have a large or complex business, it might take two or more days.

Bill and I have a good relationship, but this is a complex business to manage.

Running an oil company is, at almost every single level, a very complex business.

Map making, it seems, has never been a more complex or sensitive business.

Doing that for a single individual is a very complex business.

Flying one group to its next run and collecting the other groups in between is quite a complex business.

The world trade in bananas is a very complex business with many players and conflicting interests.

One, it is a complex business, and each country has its own subsidies.

The management of a Compact is a very complex business.