They always appear in pairs, don't they?

它总是成双出现，对吧？

They are easy to learn and are usually danced in couples.

这些舞蹈很容易学会，通常都是成双成对地表演。

2 pair out on a Friday night, coupled. Yeah, a double date.

两对情侣在周五上出去玩玩，成双成对。是，四人约会。

Pigeons live in pairs, and the mates are very fond of each other.

鸽子是成双成对地生活, 彼此非常恩爱。

I thought I was done getting lucky tonight. So, when are you thinking of moving?

我真没想到" 好事" 成双啊，所以你计划什么时候搬？

The others paired off as before, and this arrangement left Jo companionless.

其余人各自成双结对，跟过去一样，只剩下乔无人陪伴。

They walked or danced around a cake in pairs, and the best couple won the cake.

成双结对地围着蛋糕走或者跳舞，跳最棒一对赢得蛋糕奖励。

When your wife dies, it must be depressing to see other people in a loving relationship.

谁妻子死了 看见成双成对幸福 心里都会不舒服。

This month, a lot of Americans are talking about pairs or doubles – words relating to the number two.

这个月，很多美国人都在谈论成双（pairs）成对（doubles）——与数字2有关单词。

To find out, researchers had participants pair off and walk together, either in synch or just at their natural pace.

为了一探究竟，研究人员让参与者成双结对并且一起行走，要么同步，要么随性。

Each fibre comes in a pair and each fibre pair, at a conservative estimate, can transmit 150 million simultaneous phone calls.

每根纤维都是成双出现，根据保守估计，每一对纤维可以同时传输 1 亿 5 千万部电话通话。

I am not sure if Martha and Jem looked more radiant in the afternoon, when they, too, made their first appearance.

我不确定玛莎和杰姆在那天下午是否看起来比霍金斯夫妇更加容光焕发，那时俩首次成双成对地出现。

They were doing it in pairs, couples.

成双成对地做着。

Stupid things have good outcomes all the time.

- 傻事好事成双。

We'll see couples rowing in row boats and paddling in paddle boats.

我会看到成双成对人在划船和划桨。

People just walking around late at night, some were alone while others were in pairs.

人深夜漫步，有独行，有成双。

Though she was bent almost double, she was as spry as a gopher.

虽然她弯得几乎成双了， 但她像地鼠一样活泼。

So that's where the animals two by two.

所以这就是动物成双成对原因。

The school friends have all paired off and everybody is very happy.

学校朋友都已经成双成对，大家都非常开心。

This is what I miss about being in a couple.

所以很怀念以前成双入对日子。