daily sunshine duration的用法和樣例：
例句
- Otherwise, days with sand-dust had an important influence upon sunshine durations in spring.
另外，南疆春季沙塵天氣對日照時數有著顯著的影響。 - The degree of rice grain chalkiness increased with increasing mean temperature and sunshine duration from the south to the north during the grain ripening stage.
就中，米粒白堊質之等級的試區變異方向與三試區稻穀粒充實發育期間外界之氣溫和累積日照時數之試區變化方向一致，呈由南而北依次遁增。
