см. тж. если он является ; представлять собой
• The numbers 235 and 238 represent ( or are ) the mass numbers of the two isotopes of uranium.
• The electron makes a better probe of the structure of matter.
• The existence of a predicted isomerism provides ( or furnishes , or offers ) one of the most important confirmations of ...
• The shock wave method constitutes a useful addition to the present techniques.