Professional Development Degree的用法和樣例：
例句
- Development of village-rank primary schools is the touchstone of regional basic education development.
摘要村級小學的發展是區域基礎教育發展程度的試金石。 - As for the contrast between the levels of development of Taiwan and the mainland, this question should be examined objectively.
至於比較台灣和大陸的發展程度，這個問題要客觀地看。
