Translate the following underlined sentences into English.历史经验证明，开放带来进步，封闭必然落后。中国经济实现腾飞的一件重要法宝就在于坚持了对外开放的基本国策。
AS HISTORICAL EXPERIENCE HAS PROVED, OPENING UP LEADS TO PROGRESS WHILE ISOLATION INEVITABLY RESULTS IN BACKWARDNESS.
Translate the following underlined sentences into English.历史经验证明，开放带来进步，封闭必然落后。中国经济实现腾飞的一件重要法宝就在于坚持了对外开放的基本国策。
AS HISTORICAL EXPERIENCE HAS PROVED, OPENING UP LEADS TO PROGRESS WHILE ISOLATION INEVITABLY RESULTS IN BACKWARDNESS.
