n. a person who is a participating member of an organization
a. tending to become more severe or wider in scope
s. engaged in or ready for military or naval operations
a. disposed to take action or effectuate change
a. 活跃的, 起作用的, 积极的, 有效的, 主动的, 活性的, 现行的, 现役的
n. 主动语态, 积极分子