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• The trace is so complicated that the observer may not be able to make sense (or to make head or tail — col.) of it.
• This situation may be difficult to unravel.
Источник:
Русско-английский научно-технический словарь
на Gufo.me
• The trace is so complicated that the observer may not be able to make sense (or to make head or tail — col.) of it.
• This situation may be difficult to unravel.