discretional
(a.)任意的;自由的
Dis·cre·tion·al Dis·cre·tion·a·ry Left to discretion; unrestrained except by discretion or judgment; as, an ambassador with discretionary powers.
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discretional
adj : having or using the ability to act or decide according to
your own discretion or judgment; "The commission has
discretionary power to award extra funds" [syn: discretionary]