за год до
• This Proton Synchrotron was completed about a year ahead of the Brookhaven ACS.
USAGE: за (один) год до
• One year prior to (or before) the discovery of ...
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• This Proton Synchrotron was completed about a year ahead of the Brookhaven ACS.
USAGE: за (один) год до
• One year prior to (or before) the discovery of ...