establishment and perfection的用法和樣例：
例句
- Various facilities for grassroots sports shall be established and improved on an ongoing basis.
不斷建立和完善各類(lèi)群眾健身體育場(chǎng)地。 - Feudal autocracy and centralism were established and reached perfection in this period.
封建專(zhuān)制和中央集權制在此時(shí)期得到了建立和完善，并一直為后世封建帝王所效法。
