Sentence examples for these sources are from inspiring English sources

Yet these sources are increasingly polluted.

These sources are all free of charge.

Many of these sources are in Asia.

None of these sources are acknowledged in the essay's footnotes.

But these sources are often merely starting points.

These sources are classed as man-made noise.

Nevertheless, these sources are excellent Super-Eddington candidates.

These sources are designed to get you started.

These sources are amongst the most compact SNR in M82.

Experimental neutron efficiencies of these sources are approximately uniform.

None of these sources are identified by name, nor are its authors.