6. to read between the lines：to interpret the hidden meaning or a hidden message; to discern the true fact

(从字里行间体会隐含的意义；领会言外之意或能了解其中的真正意义)

As you look at this poem, be sure to read between the lines.

(读这首诗的时候，要从字里行间去体会它的含义。)

After he re-read the love letter between the lines, he realized that he was dumped by his sweetheart.

(重读情书之后，他终于明白他已经被情人抛弃了。)

7. to let off steam：to give vent to one's anger

（发泄、出气，像放掉蒸汽以减少压力似的。这与"to fly off the handle"意思相近，但比"to lose temper"委婉客气些 ）

What will you do if your wife lets off steam?（假如你太太大发脾气的话，你该怎么办呢？)

(因为谈论的对象使对方的太太，所以语气要委婉客气些)。

但是谈到第三者，就可不必太委婉，可用 lose temper:

What will you do if one of your staff lose temper?

（如果你的同事冲你发脾气你该怎么办呢？）

Occasionally we should be given a chance to let off steam.（我们应该不时的发泄一下情绪。）