The separation of the flow over wings precipitated by the compression shock that forms as speeds are increased into the supercritical Mach number range has imposed serious difficulties in the improvement of aircraft performance. These difficulties arise principally as a consequence of the rapid drag rise and the loss of lift that causes serious stability changes when the wing shock-stalls.

This is the hardest duty on the railway, for the trains are heavy and there are some long 1 in 40 banks.

The English possessive 's is an enclitic.

Yesterday I had a foodgasm. I bought some sun-dried tomatoes from the olive seller in Leicester market. Got home, popped one in my mouth... chewed...