1.
It is not every couple that be a pair .
成双成对多，珠联璧合少。
2.
The guests came in couples.
客人们成双成对地来了。
3.
A pairing or union of two similar or identical objects.
成双成对两个相同或相似物体的成双或联合
4.
After dinner we paired off and went to dance.
饭后我们成双成对地跳舞去了。
5.
Shoes and gloves all come in pairs.
鞋子与手套都是成双成对的。
6.
They wandered off in pairs and chatted about their own affairs.
他们成双成对结伴而行，聊着家常小事。
7.
After dinner the boys and girls paired off and went to dance.
会餐后，男女青年们成双成对地去跳舞。
8.
She played up to her art teacher, and suddenly they were a couple.
她对她的美术老师示好,不久他们就成双成对了。
9.
Two wheels cannot be put together hap-hazard."
两个轮子不是偶然碰上就能成双成对的。”
10.
A person's lungs are duplicate, but he has only one heart.
一个人的肺是成双成对的，但他只有一个心脏。
11.
6. Couples: In a relationship?
6.成双成对的约会：已经有了情爱关系了吗?
12.
Noah built an ark, which the animals came on to in pairs.
挪亚建造了方舟，动物们成双成对地来了。
13.
To form pairs or a pair.
成对，成双使形成几对或一对
14.
One of a matching pair or set of things
(成双、成对或成套的)物品之一
15.
Paired or coupled with something identical or similar.
成比成对的相同或相似成双或成对的东西
16.
Electro-synthesis of Glyoxalic Acid in Pairs in the Designed Double-anode Cell;
对称式双阳极室成对电解合成乙醛酸的研究
17.
The Restriction of Typicality on the Formation of the Nominal Structure “V [double syllables] + N [double syllables]”;
论典型性对定中“V_双+N_双”结构构成的影响
18.
consisting of or involving two parts or components usually in pairs.
双重的，由一对中的两个部分或成分组成的。