I
см. тж. а не ~ ; в противоположность этому
• The propulsion engines for aeroplanes must operate continuously during the flight. In contrast ( or By contrast ), space vehicles coast freely during practically all of their useful lives.
• Such methods are difficult as well as tedious and require large amounts of starting material. Chromatography, on the other hand , is simple, rapid, and ...
• Quite the reverse .
II
см. тж. бывает и ~ ; в противоположность этому ; и ~
• For many professionals, it was love of high country which attracted them to geology, rather than the other way ( a ) round ( or about ).
• Conversely , efficiency increases as the cut-off ratio decreases.
• To the contrary , both polynucleotides reacted more strongly with ...
• The abdominal ganglia, on the contrary, vary greatly.