成对的

Parentheses // A balanced set of parentheses ...

一对成对的括号

One, the geminate and didymous phenomenon in university campus is commonner, no matter from which for the respect, the influence of sweethearts both sides all prep above is other classmate or the teacher's influence.

一，大学校园里成双成对的现象比较普遍，无论从哪个方面来说，情侣双方的影响均高于其他同学或者老师的影响。

The principle of the reference line design is based on the precise guide rail. The laser beams of the couple lasers should be aligned.

设计的原理是以精密导轨作为直线基准，成对的二支指示激光器发出的指示光束应成一直线。

Therefore we should expect the following: Hypothesis 2: Pairwise similarity judgments between product categories may be asymmetrical.

因此我们必须预期以下的：假设2：产品分类间成双成对的相似性判断可以是不对称的。

And when they arise in pairs the arrangement is termed opposite, e.g. lilac (Syringa spp.).

当叶片成对的排列称为对生，如紫丁香。

A mated pair of red-and-green macaws soars above the forest in Bolivia's Madidi National Park.

意译：一成双成对的红和绿色的金刚鹦鹉望上高飞在玻利维亚的Madidi国家森林公园。

Swingers and the so-called 'key-societies', still adhere to the concept of a couple. It's either done for the sake of 'keeping the marriage' or to 'liven things up between the two'.

追赶时髦的人和所谓的&精英团体&仍在拥护成双成对的观念，这要么是为了&维持婚姻&，要么就是&使二人世界有生气&。

The window apparently overlooked a park where there was a lake. There were ducks and swans in the lake, and children came to throw them bread and sail model boats. Young lovers walked hand in hand beneath the trees, and there were flowers and stretches of grass, games of softball. And at the back, behind the fringe of trees, was a fine view of the city skyline.

从窗户往下看，显然是一座公园，那里有一湾湖水；许多鸭子和天鹅悠然湖上，孩子们在湖边给它们喂食、试航船模；成双成对的恋人手拉着手儿漫步树下，处处有盛开的鲜花和伸展的绿地，还有人在玩垒球呢；远处树林的尽头城市的上空清晰可见。

The window apparently overlooked a park where there was a lake. There were ducks and swans in the lake, and children came to throw them bread and sail model boats. Young lovers walked hand in hand beneath the trees, and there were flowers and stretches of grass, games of softball. And at the back, behind the fringe of trees, was a fine view of the city skyline.

从窗户往下看，显然是一座公园，那里有一湾湖水；许多鸭子和天鹅悠然湖上，孩子们在湖边给它们喂食面包，试航船模；成双成对的恋人手拉着手漫步树下，处处有盛开的鲜花和伸展的绿地，还有人在玩垒球呢；远处树林的尽头城市的上空清晰可见。

The window apparently overlooked a park where there was a lake. There were ducks and swans in the lake, and children came to throw them bread and sail model boats. Young lovers walked hand in hand beneath the trees, and there were flowers and stretches of grass, games of softball. And at the back, behind the fringe of trees, was a fine view of the city skyline.

从窗户往下看，显然是一座公园，那里有一湾湖水；许多**和天鹅悠然湖上，孩子们在湖边给它们喂食、试航船模；成双成对的恋人手拉着手儿漫步树下，处处有盛开的鲜花和伸展的绿地，还有人在玩垒球呢；远处树林的尽头城市的上空清晰可见。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。