support force upon economy的用法和樣例：
例句
- An object immersed in a fluid is supported with a force equal to the weight of fluid displaced by the object.
浸在流體中的物體受到一個(gè)支持力，這個(gè)力的大小等于該物體所排開(kāi)的流體的重量。 - Most old persons in Beijing have chosen the family to support life at present, so the family supportiveness is particularly important to these old people.
摘要目前北京市大多數老人選擇了家庭養老，因此家庭支持力對這些老年人顯得尤為重要。
