•Go through sth (phrasal verb) -

to experience a difficult or unpleasant situation.（经历，经受）

Examples:　　

1.We can't really imagine what they're going through.　　

2.The country is going through a period of economic instability.

•Albeit (conjunction) -

Used for introducing a comment that slightly changes or reduces the effect of what you said before it.（尽管（但不能用于句首，后面也不能用从句））

Examples:　　

1.The United States finally agreed, albeit unwillingly, to support the UN action.　　

2.He accepted the job, albeit with some hesitation.

•So much so (that) (idiom) -

To such a great degree.（到…程度）

Examples:　　

1.The twins look alike—so much so that even their parents sometimes confuse them.　　

2.It was a great project, so much so that it won first prize.

•The mountain in labour gives birth to a mouse (proverb) -

费力大、成效小。源自《伊索寓言 》：有一天，一座山发出隆隆巨响，据说是要生孩子了。人们赶来观看大山会生出什么后代。大家企盼了许久，结果只有一只老鼠从山里跳出来。

•Matter of course (idiom) -

Something that is to be expected as a natural or logical consequence.（理所当然、顺理成章之事）

Examples:　　

1.It was a matter of course that police officers received special training.　　

2.He lied about almost everything, just as a matter of course.