中英释义：
双语例句
只有通过参加户外活动，才能使我们增长知识。
Only through taking part in the outdoors' activities can we enlarge our knowledge.
重点词汇
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参加
participate in; participate; join; attend; involve; catch; enter; attach; take part; take part in; engage in; be involved in; get involved in; work for; partake; go along; part; entry; participation; attendance; in; in attendance
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户外活动
outdoor activities; outdoor pursuits