1.
An edge is a bridge if it is not contained in a cycle.
![点击朗读](/dictall/images/read.gif)
一条边是桥当且仅当它不包含在圈中。
2.
Two sets are said to be equivalent if and only if they can be placed in one-to-one correspondence.
当且仅当两个集合中的元素一一对应时,才称它们为等势。
3.
Positive semi-definite matrices are positive definite if and only if they are nonsingular.
正半定矩阵是正定的,当且仅当它们是非奇异矩阵。
4.
Axiom1: If a property is positive, then its negation is not positive.
![点击朗读](/dictall/images/read.gif)
公理1:一个性质是肯定的当且仅当它的否定是否定的.
5.
A node-set is true if and only if it is non-empty.
![点击朗读](/dictall/images/read.gif)
一个节点当且仅当它不是空节点时,表达式的值为真。
6.
The Boolean operation whose result has the Boolean value 0 if and only if each operand has the Boolean value 0.
一种布尔运算,当且仅当每个操作数都具有布尔值0时,其结果才具有布尔值0。
7.
a threshold operation in which each operand is 0 or 1; output is 1 if and only if more than half the operands have the value 1.
每个操作数只能取或的一种阈值操作;当且仅当超过一半的操作数取值为时结果值为。
8.
There's another logic operation called exclusive OR, in which the compound sentence is false, not true, if and only if all the components are true.
还有另外一种逻辑操作叫做异或:当且仅当所有的成员为真时,结果才为假。”
9.
It's not only hot today, but the smog is quite bad.
![点击朗读](/dictall/images/read.gif)
今天不仅是天气热,而且烟雾相当糟。
10.
The economic value has jumped ten times not only for this piece of land, but also for the neighborhood.
经济价值涨了10倍,不仅仅是当地的地价,而且连周边的城市也涨了。
11.
I thought, working as an editor, I must learn Chinese well in addition to having a good command of English.
我当时认为,当编辑不仅要精通英语,而且还要学好汉语。
12.
Luis is a killer. She not only spikes hard but also has tremendous spring.
![点击朗读](/dictall/images/read.gif)
路易斯是个球场杀手,她不仅重扣有力,而且弹跳力相当好。
13.
Although the ultraviolet ray only occupies the sunlight3%, also the suitable ultraviolet radiation has the sterilization.
紫外线虽然仅占阳光的3%且适当的紫外线辐射具有杀菌作用。
14.
Miss Wang was not only their interpreter, but she acted as guide during the whole trip.
![点击朗读](/dictall/images/read.gif)
在整个旅游过程中,王小姐不仅是他们的翻译而且还担当向导
15.
A falsely glowing report is not only pointless, it can be dangerous.
![点击朗读](/dictall/images/read.gif)
一份漂亮但不真实的评估报告不仅毫无意义,而且可能相当危险。
16.
As n increases, the vertical lines not only become more numerous but also tend to bunch up together to form a bell shape.
当n增加时,不仅垂线愈来愈近,而且趋向于钟形曲形。
17.
As we change and adapt, we not only survive, but we grow and evolve.
![点击朗读](/dictall/images/read.gif)
当我们改变和适应生活时,我们不仅生存,并且成长和进化。
18.
PinYin Input Edit Method is easy to grasp, and has a great many customers in market.
![点击朗读](/dictall/images/read.gif)
拼音输入法不仅具有易学易会的特点,而且拥有相当多的用户。