the activity of youth volunteers的用法和樣例：
例句
- We encourage all students to volunteer for at least one community activity before they graduate.
我們鼓勵所有學(xué)生在畢業(yè)前至少參與一項社區的志愿者活動(dòng)。 - The activity of the volunteer, as a essential part of a civilised society, is an important signal of a degree of human civilization.
摘要志愿者活動(dòng)是每個(gè)文明社會(huì )不可缺少的一部分，是人類(lèi)社會(huì )文明程度的一個(gè)重要標志。
