High school take an active part in community activities is beneficial to improve yourself. It is unwise to National Day holiday travel,because of a serious traffic jam.
The high school stage actively participate in community activities to improve their (take part in) The National Day holiday travel is not wise, because of the traffic jam (It, wise)
高中阶段积极参加社团活动有利于提升自己The high school stage actively partici pate in community activities to improve their 国庆假期外出旅游是不明智的,因为交通严重堵塞 The National Day holiday travel is not wise, because of the traffic jam