精神不正常的jīng shén bú zhèng cháng de
non compos mentis
必要条件bì yào tiáo jiàn
necessary condition, prerequisite, requirement, sine qua non
原声例句
就业、利息和货币通论(上)
Yet, in truth, there is no remedy except to throw over the axiom of parallels and to work out a non-Euclidean geometry.
然而,事实上,除了抛开平行公理并计算出非欧几里德几何外, 别无补救。
就业、利息和货币通论(上)
The classical theorists resemble Euclidean geometers in a non-Euclidean world who, discovering that in experience straight lines apparently parallel often meet, rebuke the lines for not keeping straight-as the only remedy for the unfortunate collisions which are occurring.