Sentence examples for surface must have from inspiring English sources

Earth's surface must have been relatively cool and relatively wet at the time.

Many players slipped and tumbled as the game progressed, and for most of them, trying to run on the loosening surface must have been enormously frustrating.

The existence of 3.5-billion-year-old stromatolites is, as noted above, evidence of the activity of blue-green algae, and this fact indicates that Earth's surface must have cooled to below 100 °C by this time.

Since the mature eggs of most animals are fertilized before completion of meiosis and are able to develop a polyspermy-preventing reaction, specific properties of the egg surface must have differentiated by the time meiosis stops, which is when the egg is ready to be fertilized.

With the sixth volume in his whirligig of life, love and sexual confusion in San Francisco, Armistead Maupin winds up the affairs of Mary Ann Singleton, Michael Mouse Tolliverer, the enigmatic Mrs Madrigal, landlady of 28 Barbary Lane where it mostly began, and a swarm of others; the author's working surface must have been flagged like an Ops Room map as he moved his pieces.

Therefore, a smooth surface must have been produced upon the ground fiber layer by some polishing work.

In the mid-19th century it was shown that hyperbolic surfaces must have constant negative curvature.

Surfaces must have closed contours or curves in their inner and outer boundaries.

The treatment may be validly applied to scatterers whose boundary surfaces must have no sharp corners or edges which will introduce a discontinuity in the direction of the unit vector normal to the core and/or outer coat surfaces.

The Comet inaugurated modern air travel in 1952 with its four jet engines and pressurised cabin for cruising comfortably and economically above 30,000 feet.Since the Comet's disasters in the 1950s, fledgling engineers have had it drilled into them that openings in load-bearing surfaces must have rounded corners.

For these asteroids to have such high present day H2O abundances, their surfaces must have either escaped significant thermal metamorphism or perhaps originally contained even more H2O but are now a mixture of hydrated and dehydrated materials.