a moral or legal obligation; what one ought to do

道德或法律上的义务；责任。

• 应当做的事。

the state of being at work and responsible for a task

值班或履职的状态或时间。

• 被指派的任务或职责。

a tax on imports or exports; a tariff

对货物征收的税，尤指进出口税；关税。

something owed to someone; a due, debt, or fee

应缴的费用或收费；会费。

respect or homage shown, especially in formal or archaic use

尊敬或敬意；表达敬意的举动。(古/庄重用法)

a measure of engine efficiency in work produced per fuel

工程学中每单位燃料所完成的功的度量。