Kites whooshed above the beach at intervals.

　　風箏在沙灘上空時隱時現。

　　Kites have been used for scientific purposes in the western world.

　　風箏在西方已被用于科學目的。

　　Flying kites have quite a long history.

　　放風箏的歷史由來已久。

　　Kites have been flown in Japan for hundreds of years.

　　風箏在日本已經有幾百年的歷史了。