“帮助者”用英语怎么说

他只是众多需要帮助者之一.He was only one amongst many who needed help.教师是学生意义建构过程中的帮助者和促进者,而不是知识的灌输者.Teachers are the helpers and promoters instead of imputers of knowledge.他是我们的帮助者和保护者.He is our help and our shield....