講解

Today's key word is compulsory. adj.必須做的，強制性的;義務的;必修的.

例句

But compulsory licences for chronic diseases are more controversial.

但在慢性病藥品上使用強制許可則更具爭議性。

延伸

If something is complusory, you must do it or accept it.Because it is the law or because someone in the position of authority says you must.
Let's use compulsory in a sentence.

In most schools, mathematics education is compulsory.

在大多數學校，數學是必修課。

I wish that someone could tell him that these things are not compulsory.

我希望有人會告訴他這些事情并不是他的義務。

A subsidy of about 20 billion US dollars has been given to compulsory education mostly in rural areas.
So, what's the age for compulsory education?
China has a 9 year free compulsory education which requires every child to receive a formal education from age 6 to 15. The subsidy has risen by 1.2 billion US dollars from last year.
The subsidy will mostly go to schools in the central and western part of the country for renovating school buildings and raising teachers' salaries.
(Discussion)
It means: 200 yuan per square meter for school renovation
40,000 yuan more for each teacher's annual payment
The statement also stressed that any embezzlement of the money will be severely punished.
Notes:
-為進一步提高城鄉義務教育經費保障水平，中央財政日前下撥城鄉義務教育補助經費1305.8億元，比2014年增加約80.9億元，增長6.6%。
-今年中央財政將在落實好“兩免一補”、學生營養改善計劃、鄉村教師生活補助、城市免學雜費等各項政策基礎上，繼續完善城鄉義務教育經費保障機制有關政策，進一步提高經費保障水平。