Duly
来自Big Physics
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wiktionary
From Middle English duely, dewly, dulyche, dueliche, duweliche(“rightly, properly”), equivalent to due + -ly.
etymonline
duly (adv.)
"rightly, properly; adequately, sufficiently; in accordance with duty or moral obligation," late 14c., duweliche, from dewe "due" (see due) + -liche (see -ly (2)).
