см. тж. до настоящего времени
• This technique is one of the most effective separation methods yet devised.
• Atomic hydrogen remains a gas at the lowest temperature we have yet investigated.
• So far it has been assumed that the field applied to the gas is uniform.
• The designs discussed thus ( or so ) far provide examples of ...
• To this point the assumption has been made that ...
• The discussion up till ( or to ) now ( or up to the present ) has been based upon ...
• This can be done more rapidly and accurately than has hitherto been possible.
• Up to this point it has been possible to work entirely with the concept of ...
• The applications heretofore have tended towards special purpose machines.
• The other investigations mentioned up until this point can be arranged without sending the patient to hospital.