Antigua and Barbuda was listed as a tax haven by the OECD in 2000.
Armenia is a food importer, and its mineral deposits (gold, bauxite) are small.
Where additional running lines of rails are alongside the main lines, an interval of not less than 9 feet 6 inches to be provided, if possible, between such additional lines and the main lines.
All sidings joining on to main lines should be trapped as above described, and when properly signalled and interlocked in the signal-cabin, the traffic-working can be carried on with increased facility and security.
On main lines, and lines where heavy traffic may be worked at high speed, the chairs not to weigh less than 40 lbs.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "main lines" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.