answer a call的用法和樣例：
例句
- The graves of young Americans who answered the call to service surround the globe.
那些響應號召為國捐軀的勢血青年的墓地早已遍布世界各個角落。 - As an example of the power of love, we should remember how the Chinese people of all nationalities respond to the call to help the victims of natural disasters every year.
舉一個例子證明愛的力量，我們應該記得每年中國各族人民如何響應號召去支援自然災害中的受難者。
