Trading under the firm of 'Grant Co.'
出自: C. E. RiddellTry whether the post is firm in the ground.
出自:Oxford English DictionaryAll the knots which you wished to be firm would come untied.
出自: C. S. LewisJove has firm'd it with an Awfull Nod.
出自: DrydenShe is a clerk with the firm.
她是公司的职员。