The kids are always playing tricks on their teacher.

　　孩子們經常耍些花招戲弄老師。

　　By tradition, children play tricks on 1 April.

　　按照傳統風俗，兒童在4月1日搗亂戲弄別人。

　　It's all done using trick photography.

　　這都是利用特技攝影產生的假象。