不认识认识

double up 英 [ˈdʌbl ʌp] 　美 [ˈdʌbəl ʌp]

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double up

phrase. 同宿一室；把…对折；弯曲；快跑；加把劲　

The gas pistons enable the bed to double up as a computer table.　气体活塞可以把床铺折叠起来成为一张电脑桌。

We should try to double up the amount of intimacy we have in marriage.　我们应当努力让我们婚姻中的亲密之量翻倍。

1. The gas pistons enable the bed to double up as a computer table.

气体活塞可以把床铺折叠起来成为一张电脑桌。
2. We should try to double up the amount of intimacy we have in marriage.

我们应当努力让我们婚姻中的亲密之量翻倍。
3. Tagging: Hit the double up-arrow at the bottom of the post window (or press “F2″) and a range of other options will open up, including a tagging field.

标签云集：点击发表栏底部的双向上箭头（或者按F2）之后将会出现一个新的选项区域，标签设置栏就在这里。