New Words：

double ['dʌbl]
n.两倍；两倍数；两倍量；一杯双份的烈酒
v.折叠；（使）加倍；是…的两倍；把…对折
adj.两倍的；加倍的；双的；成双的
adv.两倍的；双倍的；双双地；成对地

Sample Sentences：

Ten is the double of five.
He doubled his bread to make a sandwich.
Be double careful when you cross the street.
Can I have a double room for tonight,please?
Ten dollars for a single room and 15 for a double.

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