answer a call的用法和样例：
例句
- The graves of young Americans who answered the call to service surround the globe.
那些响应号召为国捐躯的势血青年的墓地早已遍布世界各个角落。 - 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.
举一个例子证明爱的力量，我们应该记得每年中国各族人民如何响应号召去支援自然灾害中的受难者。
