一对的

Certain of the snakes, such as Crotalus, Bothrops, Lachesis, Trimeresurus, and Agkistrodonpossess a pair of pit organs which enable snakes to detect and capture prey animals in the dark.

许多蛇类，例如响尾蛇属，洞蛇属，饭匙倩蛇属，竹叶青蛇属和蝮蛇属等在头部具有一对能在黑暗中探测和捕获猎物的凹陷器官。

Listen carefully; speak much; read widely; learn...by heart; practise writing;...

十、书面表达训练（10）小明和小华是在"手拉手"活动中结成的一对学习伙伴。

I want to add a lesbian couple to our circle.

我想在我们的圈子中增加一对同性恋。

They love, they are like-minded, and their combination is a natural, real as a pair.

他们相爱了，他们志同道合，他们的结合是天生一对，地作一双。

You should print robot's route to output, every pair of coordinates in separate line.

输出机器人的行走路线，一行输出一对坐标。

They have also made a logic element out of a pair of leech neurons (nerve cells from blood-sucking worms) placed on a microchip.

他们还用一对放在微芯片上的水蛭神经元组成了一个逻辑元。

At first glance, the Rogue Shadow wasn't much to look at: a twin-armed, long-bodied starship with the chassis of a small transport, two solar gather panels on the starboard side, and a larger weapons pod to port.

乍一看，游荡阴影号并无任何特别之处：一对机炮，细长的船身，底盘是一个小小的运输舱。

Why, I had always supposed that Mrs. Lupin and you would make a match of it.

我过去总是想，你和卢宾太太是郎才女貌的一对。

I think Xixi and Macaulay would make a perfect couple. Let's fix them up.

我想西西和macaulay会是理想的一对，我们来撮合他们吧。

Eg: I think Xixi and Macaulay would make a perfect couple. Let's fix them up.

我想习习和macaulay会是理想的一对，我们来撮合他们吧。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。