1.
Change these two pictures over.
把这两张画对换一下。
2.
After recess, the children will swap places - and switch languages.
稍作休息之后，孩子们就对换教室—也对换语言。
3.
contrast variation
对比（度）变换（法）
4.
I think a change might do you good.
我想换换环境也许对你有好处。
5.
A change of air (eg a holiday away from home) will do you good.
换换环境（如离家度假）对你有好处.
6.
It would be good for you to get a break, they said.
他们说，换换环境对我有好处。
7.
tension of game without exchange of information
不交换信息对策的扩充
8.
game with exchange of information
交换信息对策的扩充
9.
Offset mode Transform Type-in
相对坐标方式变换输入
10.
Absolute Mode Transform Type-in
绝对坐标方式变换输入
11.
foreign exchange allocations, taxation.
对外交换配给和纳税等。
12.
symmetrical chromatid exchange
对称型染色单体交换
13.
asymmetrical chromatid exchange
非对称型染色单体交换
14.
A Study on the Diachronic Substitution of Shu(梳),Bi(篦)and Zhi(栉)
“梳”、“篦”对“栉”的历时替换考
15.
involutive correlation
对合的对射变换， 对合对射
16.
Improved support for traversing Network Address Translation devices
增强的对转换“网络地址转换”设备的支持
17.
For me, my job was that place.
对我而言，工作就是这样一个换换气的地方。
18.
A change of air (e.g. a holiday away from home) will do you a lot of good.
换换环境（如离家去度假），对你会很有益处。