Alex: I need to fuel up my car.
Clerk: Well, which kind of gas do you want, regular gas or unleaded gas?
Alex: I'd like unleaded gas, please.

Clerk: OK. How many liters do you want?
Alex: Just fill it up, please.
Clerk: Sorry, sir. Owing to the energy shortage, we have to limit the sale of gas to at most 18 liters for each buyer at a time.
Alex: In that case, just give me 18 liters, please.
Clerk: OK. Please wait a minute.
Alex: Fine, thank you. Here's the money.
事情职员:师长西席,须要什么做事?
艾利克斯:我要加油。
事情职员:好的,您想加哪种汽油呢,普通汽油还是无铅汽油?
艾利克斯:请帮我加无铅汽油。
事情职员:好的,你要加几公升呢?
艾利克斯:就帮我加满吧。
事情职员:很抱歉,师长西席。由于能源短缺,我们必须限定每位顾客的加油量,一次最多只能加18公升。
艾利克斯:这样的话,就请你帮我加18公升。
事情职员:好的,请稍等。
艾利克斯:好了,感激你。钱在这里。