Feeling quite nervous I didn't notice that another person had stepped up to the counter.
我感到很紧张，没有注意到另一个人已经走向柜台。
2
For example, notice that in Listing 3 the counter — initially set to the default value of "37" — is surrounded by span tags.
例如，请注意在清单3中，计数器的初始值被设置为默认值“37”，包围在span标记内。
3
The status attribute in the tag is a simple counter field. (Notice this value is used on the next line in a ternary statement that sets the CSS style to either even or odd.)
标记的 status 属性是个简单的计数器字段（请注意这个值用在下一行的 ternary 语句中，用来将 CSS 样式设为 even 或 odd）。