The major strain on revenue was imposed by the demands of war.

The result is a wide outcrossing between all major strains.

Still, the abortion issue is already causing major strains.

This causes a major strain on her newly formed, tentative friendship with Jenny.

"The hurricane placed a major strain on the relationship," she said.

So while four other major strains are included in the vaccine, the danger from meningitis B remains.

Globally, three major strains of cocoa beans are grown and traded.

I guess the major strain of this contact procedure rests on your shoulders.

However, we can only actually use 1% of this water, and many human activities are putting a major strain on the resource.

There was a major strain gone in not having to move furniture, unpack, set up everything, get utilities established.