Now, we have another couple of expressions.

这，还有另外两表达式。

And of course, we have an expression just for that!

当然，有一专门的表达式！

What kind of expressions did we use?

用了什么样的表达式呢？

Let's recap the expressions that we used.

让总结一下使用的表达式。

You can also use the expression 'newbie'.

您也可使用‘newbie’这表达式。

You can also add prepositions to this expression.

也可将介词添加到此表达式中。

But let's just keep in general.

求出重力各分量的表达式。

And we have 11 expressions here which are a little bit more difficult to understand.

这里有11表达式，有点难理解。

It could be another word, it could be an expression.

可是另一词，也可一表达式。

Let's hear this expression used in some examples.

让听听这表达式在一些例子中的用法。

Also notice that these expressions somewhat complicate our equation.

还要注意，这些表达式使的方程有点复杂。

What do you think these expressions mean?

你认为这种表达式是什么意思？

A noun, in Mathematics, a statement that two expressions are equal.

一名词，在数学中，是指两表达式相等的声明。

Now, notice that this equation contains two instances of the expression 3x plus 1.

现在请注意，这方程包含了两表达式 3x+1。

The expression combines the adverb " as" with the preposition " per."

该表达式将副词“as”和介词“per”组合在一起。

Like prepositions in general, they must appear immediately next to the expression they combine with.

与一般的介词一样，它必须出现在它所组合的表达式旁边。

In many cases, these expressions take the form of a sentence fragment.

在许多情况下，这些表达式采用残缺句的形式。

They're fixed expressions formed from two or three words linked together in different ways.

它是由不同方式链接在一起的两或三词形成的固定表达式。

Okay? And I'll show you some of the expressions that you use in order to do that.

懂了吗？来举几用做请求的表达式的例子。

We can write an expression like this. String python space in space course.

可这样写一表达式。字符串 python space in space 课程。