Sentence examples for has to be maintained from inspiring English sources

This capital structure -- natural resources and human beings -- has to be maintained at all times.

Free travel through sea and air around China has to be maintained.

And unfortunately it's a living one and has to be maintained.

And, usually, the equilibrium of only one party has to be maintained.

These days, his findings are widely accepted: for group prejudice to be eroded, group identity has to be maintained.

For carbon fiber reinforced polymer parts featuring manufacturing defects the balance between safety and cost has to be maintained.

The abundant extracellular matrix of articular cartilage has to be maintained by a limited number of chondrocytes.

For example, the stripper gas pressure has to be maintained at a high level to dissociate molecular ions.

To preserve plant species diversity at the landscape level a high diversity of land use types has to be maintained.

To keep the warhead safe before being armed, the plutonium has to be maintained in a sub-critical state.

"It has to be maintained properly, and that's a lesson I hope people have learned," she said.