hours 什么意思?

1700 hours什么意思 hours什么意思 hours 什么意思? 英文HOURS什么意思 hours什么意思 over 2 hours什么意思 Yes 3 hours什么意思 after-hours contacts什么意思,快, after hours on request什么意思 I spent two hours doing my homework yesterday什么意思 The school library opens five hours a day什么意思 What sort of hours do you work? 什么意思? 12 hours of graduate credits per semester什么意思 How many hours does the store friendly什么意思 relax20 hours every day.什么意思~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~速度!急用啊smyisi for two hours中的for代表什么意思? fortwo hours意思 Susan sleeps over ten hours every day.什么意思?哪个好心人说下意思~谢谢了