expression
美[ɪkˈsprɛʃən] 网络表达；表情；表达式；表现
1 . It's enough to make you wet yourself, if you'll pardon the expression .
这足以吓得你尿裤子了，请原谅我这么说。
来自柯林斯例句
2 . He screwed his face into an expression of mock pain.
他面部扭曲，假装疼痛。
来自柯林斯例句
3 . Under the shaded light her expression was difficult to read.
她的表情隐在阴影中，很难读懂。
来自柯林斯例句
4 . There was no grief in his expression, only deep resignation.
他的表情里没有悲痛，只有深深的无奈。
来自柯林斯例句
5 . Mr. Sebastian was looking at the boys with a bemused expression .
塞巴斯蒂安先生一脸茫然地看着男孩儿们。
来自柯林斯例句
1.the expression on a person's face;
a sad expression
2.expression without words;
tears are an expression of grief
3.the communication (in speech or writing) of your beliefs or opinions;
expressions of good will
4.a word or phrase that particular people use in particular situations;
pardon the expression
5.the style of expressing yourself;
he suggested a better formulation
6.a group of symbols that make a mathematical statement
7.(genetics) the process of expressing a gene
8.a group of words that form a constituent of a sentence and are considered as a single unit;
I concluded from his awkward constructions that he was a foreigner
9.the act of forcing something out by squeezing or pressing;
the expression of milk from her breast
CSS中的行为—expression CSS中使用expression有ie才能识别。IE5及其以后版本支持在CSS中使用expression，用来把CSS属性和Javascript表达式关联起来，这里的CSS属性可以是元素固有的属性，也可以是自定义属性。就是说CSS属性后面可以是一段Javascript表达式，CSS属性的值等于Javascript表达式计算的结果。 在表达式中可以直接引用元素自身的属性和方法，也可以使用其他浏览器对象。这个表达式就好像是在这个元素的一个成员函数中