that can or must be 可…的；能…的；应…的 calculable 可计算的 taxable 应纳税的
having the quality of 具有…性质的 fashionable 时髦的 comfortable 舒适的 changeable 易变的
Word Originfrom French -able or Latin -abilis; originally found in words only from these forms but later used to form adjectives directly from English verbs ending in -ate, e.g. educable from educate; later used to form adjectives from verbs of all types (influenced by the unrelated word able), e.g. bearable, saleable.