An errand is a short trip to do a small job, often for someone else or for the house: posting a letter, collecting a parcel, buying milk, dropping off keys. It is not a trip for fun, and it is not a long journey.

An errand它 is a short trip是一趟短短的外出 to do a small job去做一件小事 often for someone else or for the house通常是幫別人或幫家裡辦的 posting a letter像是去寄信 collecting a parcel去領包裹 buying milk去買牛奶 dropping off keys去放鑰匙 It它 is not a trip for fun不是為了好玩出門 and it is not a long journey也不是長途旅行

Parents send children on errands; office workers “run errands” at lunch. The usual verb is run, not do — “run an errand,” “run a few errands.” People will understand “do an errand,” but it sounds like learner English.

Parents父母 send children on errands會叫小孩去跑腿 office workers上班族 at lunch在午餐時間 “run errands”也叫「run errands」 The usual verb常用的動詞 is run, not do是run，不是do “run an errand,” “run a few errands.”「run an errand」、「run a few errands」 People will understand大家聽得懂 “do an errand,”「do an errand」 but it sounds like learner English但聽起來像外語學習者的英文

Though actually, in older English an errand could also be the message itself, not the walk. A little of that remains in “a fool’s errand,” a job that cannot succeed, so the trip is wasted from the start.

Though actually不過其實 in older English在比較舊式的英文裡 an errand它 could also be the message itself也可以指要傳的口信本身 not the walk而不是那趟走路 A little of that remains這個舊意思還留了一點 in “a fool’s errand,”在「a fool's errand」裡 a job that cannot succeed指一件注定做不成的事 so the trip is wasted from the start所以這趟等於一開始就白跑了

The word is ordinary and slightly homely. It is not formal, and it is not slang.

The word這個字 is ordinary and slightly homely很平常，也帶點家常味 It它 is not formal不正式 and it is not slang但也不是俚語