errand
US
UK errand n: (task outside home, office)
SC 差事 chāi shì
SC 差使 chāi shì，chāi shǐ
My boss is always sending me on errands just so I'll have something to do.
我老板总让我干跑腿的差事，不让我闲着。
errand boy n: (carries messages)
SC 跑差 pǎo chāi
SC 供差遣的童仆 pǎo chāi，gōng chāi qiǎn de tóng pú
Don't ask me to pass your messages: I'm not your errand boy.
I had the title of Assistant to the President, but the truth is, I was just an errand boy.
fool's errand n: (a pointless exercise)
SC 徒劳无益的差事
SC 无谓的奔走
run an errand, go on an errand v expr: (task outside home)
SC 办个差事
I won't be at home tomorrow morning, as I have to run a few errands.