| 释义 |
optioˈnality
[f. optional a. + -ity.]
Optional quality; opportunity or freedom of choice.
1880Scotsman 24 Jan. 6/3 How much optionality there may be in an option which is allowed to opt only in one direction may yet be a question for the learned. 1972Language XLVIII. 337 (heading) Stress Optionality and the Global Alternative. Ibid. 340 The second case of optionality concerns questions. 1975Amer. Speech 1973 XLVIII. 39 Even so, the number of implicational relationships remains huge, suggesting..that at least some optionalities are ‘not learned by the child, but [are] predictable from exactly the kinds of substantive constraints..[and] general functional considerations..as those discussed’ in Kiparsky's article and suggested to him on quite independent grounds. 1975Language LI. 1015 Generative grammar has no way of formalizing optionality. |