For four decades the basic conceit has remained unchanged: to get visitors to experience science hands-on.

四十年过去了，最初的设想却一直没有改变：让参观者亲手体验科学。

youdao

For four decades the basic conceit has remained unchanged: to get visitors to experience science hands-on.

四十年过去了，最初的设想却一直没有改变：让参观者亲手体验科学。

youdao