able to be replaced or done without; superfluous 可替代的;可有可无的;多余的 the captain's loss of form made him dispensable. 船长失落的状态使他成了累赘。 ■(of a law or other rule) able to be relaxed in special cases (法律或其他规则)在特定情况下可放宽的,可通融的
派生 dispensability noun 语源
early 16th cent. (in the sense 'permissible in special circumstances'): from medieval Latin dispensabilis, from Latin dispensare (see dispense)