1、Many experts point out that physical exercise contributes directly to a person's physical fitness.

　　2、Proper measures must be taken to limit the number of foreign tourists and the great efforts should be made to protect local environment and history from the harmful effects of international tourism.

　參考譯文：

　　1、許多專家指出體育鍛煉直接有助于身體健康。

　　2、應(yīng)該采取適當(dāng)?shù)拇胧┫拗仆鈬?guó)旅游者的數(shù)量，努力保護(hù)當(dāng)?shù)丨h(huán)境和歷史不受國(guó)際旅游業(yè)的不利影響。