What can you do with expression trees?
你能用表达式树做些什么呢？
He closed his letter with expression of grateful thanks.
他在那封信的结尾表达了自己的感激之情。
But what if they are endowed with expression, limbs or actions as human being?
但是，如果它们被赋予了像人一样的表情、四肢或行为会怎样呢？
They turned to one another with the same expression of dawning comprehension, surprise, and relief.
他们带着一样恍然大悟、惊奇、松了一口气的表情相互看了看。
"Perhaps it is," said the nurse, still looking at him with a mystified expression.
“也许是。”奶妈说，仍然带着困惑的表情看着他。
He looked at her with a hurt expression.
他带着受伤害的神情看着她。
She stared at me with a blank expression on her face.
她木然地盯着我。
She glared down at me with a peevish expression on her face.
她低头瞪着我，一脸怒气。
He dropped back on his pillow and lay there with an odd expression on his face.
他倒回到枕头上，躺在那里，脸上带着古怪的表情。
Camel, soaked with sweat, makes a hand expression for "shush" secretly.
满身大汗的卡梅尔悄悄地做出一个“嘘”的手势。
The next question is how to do anything with the components of an expression.
接下来的问题是如何处理表达式的组成部分。
With the following expression you can extract all three pieces of information.
通过以下表达式，您可以提取所有三项信息。
It'll cost me. But I'll bond with that car and love it because it's mine, an expression of me.
虽然我付出了成本，没关系，因为我喜欢，我与这辆车建立了感情，因为他是我的，他是我的一种表达。
The main part of pattern matching is coming up with the expression to use.
模式匹配的主要部分是关于要使用什么样的表达式。
First, get all the matches with a regular expression that look pretty complex.
首先，获得所有与一看起来非常复杂的正则表达式匹配的结果。
We deeply appreciate Russia's expression of solidarity with India at this moment.
我们非常感谢俄罗斯此时此刻对印度表达的团结精神。
Listing 8 demonstrates how to check a JSON string with a regular expression.
清单8演示了如何使用正则表达式检查JSON字符串。
The expression of feeling should not carry judgmental baggage with it.
情感表达不该带有判定的包袱。
An expression was created with the expression editor (Figure 15).
表达式是使用表达式编辑器创建的(图15)。
She looked down with a despondent expression on her face. “I know,” she said.
她摆出一副懒散的表情，说：“我知道。
Add a new query item with the following expression definition.
用以下表达式定义添加一个新的查询项。
Click Apply to update the expression with these values.
单击Apply以使用这些值更新该表达式。
In the second part, write the expression with namespace prefixes (result2).
之后，再用名称空间前缀（result2）编写此表达式。
Then it creates an in expression with the path expression as input.
然后，它创建一个使用路径表达式作为输入的in表达式。
That's accomplished through the use of the replace function along with a regular expression.
替换过程使用replace函数和正则表达式完成。
The expression is finally executed with the built in erl_eval:exprs library function.
最后由内建的erl_eval:exprs库函数执行构建好的表达式。
The two-argument case starts off with a let expression.
两个参数的情况从let表达式开始。
The two-argument case starts off with a let expression.
两个参数的情况从let表达式开始。
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