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 vent¹ 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。）