详细释义 · 难度约 A2（AI 估计）
adj.积极的；主动的
If you are active in an activity, you take part in it and do things rather than just watch.
She is an active member of the school club.她是学校社团的积极成员。
adj.好动的；活跃的
If someone is active, they move around a lot and have plenty of energy.
The children are very active after school.孩子们放学后非常好动。
adj.仍在使用的；有效的
If something is active, it is working or in use now.
Your account is still active.你的账户仍在使用中。
adj.（火山）活跃的
If a volcano is active, it can produce lava, smoke, or steam.
The island has an active volcano.这座岛上有一座活火山。
