up to scratch 这个习惯用语起源于九十多年前在室外举行拳击赛的时代。当时人们在泥地拳击场上划出一条线，就叫做scratch，而两名拳击选手在准备开始比赛的那一刻得用脚尖抵着这条线面对面站着，这样才合乎比赛规定。现在人们把这个习语应用到与拳击无关的地方，表示：“合乎标准，达到标准”。因此，当美国人说"Your last shipment wasn't up to scratch."时，他/她要表达的意思就是:"Your last shipment wasn't up to par."、"Your last shipment didn't meet the standards."。
Benjamin: I think you'd better come out to that company. Your last shipment wasn't up to scratch.
Terry: OK. I'll go and have a look at it.
①Really? I've done sample inspection!
②OK. I will handle it as soon as possible.
③But I was so careful while checking the cargoes.
④Sorry. I fell asleep at the switch.
1. shipment n. 装载的货物
Please advise the date of shipment as soon as possible.
The shipment is destined for America.
2. up to par 达到标准
I didn' t think her performance was up to par.
The goods are not up to par.
3. cargo n. 货物
The boat calls at the main port to load its regular cargo of bananas.
The ship has a cargo of about 200 ton.
4. fall asleep at the switch 玩忽职守，工作失误
Don't fall asleep at the switch when the job is offered to you.
He got sacked for falling asleep at the switch.