1
- with obj. and infinitive bind or compel (someone), especially legally or morally（尤指在法律或道德上）约束, 强制（某人）; 使负有法律（或道义）责任：
the medical establishment is obligated to take action in the best interest of the public.
医疗机构有责任采取符合公众最大利益的行动。
2
- with obj. US commit (assets) as security〈美〉以（资产）为担保：
the money must be obligated within 30 days.
这笔钱必须在30天内作为抵押交付。
attrib.
- Biology restricted to a particular function or mode of life【生】专性的, 固性的：
an obligate intracellular parasite.
一种固性细胞寄生虫。常与FACULTATIVE相对。
派生词
obligator
noun词源
late Middle English （as an adjective in the sense 'bound by law'）： from Latin obligatus, past participle of obligare （see OBLIGE）. The current adjectival use dates from the late 19th cent.