The film star is keen on public welfare undertakings. 這位影星熱衷於公益事業。
Charity advertisements aim at evoking public sympathy. 公益廣告旨在引發公眾的同情心。
The public belonging property of natural resources and capital rareness are its condition. 自然資源的公共物品屬性以及資本的稀缺性是生產力異化的條件。
The authors explored those different aggregation technology models and their influence on the amount of public goods, and then some review was posed. 於是，該文作者考察了不同加總技術的公共物品分類及其對公共物品供給量的影響，在此基礎上進行了簡要評述和展望。
